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2733 lines
86 KiB
C++
2733 lines
86 KiB
C++
/*
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* The Progressive Graphics File; http://www.libpgf.org
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*
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* $Date: 2007-02-03 13:04:21 +0100 (Sa, 03 Feb 2007) $
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* $Revision: 280 $
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*
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* This file Copyright (C) 2006 xeraina GmbH, Switzerland
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU LESSER GENERAL PUBLIC LICENSE
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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//////////////////////////////////////////////////////////////////////
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/// @file PGFimage.cpp
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/// @brief PGF image class implementation
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/// @author C. Stamm
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#include "PGFimage.h"
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#include "Decoder.h"
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#include "Encoder.h"
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#include "BitStream.h"
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#include <cmath>
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#include <cstring>
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#define YUVoffset4 8 // 2^3
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#define YUVoffset6 32 // 2^5
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#define YUVoffset8 128 // 2^7
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#define YUVoffset16 32768 // 2^15
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//#define YUVoffset31 1073741824 // 2^30
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//////////////////////////////////////////////////////////////////////
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// global methods and variables
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#ifdef NEXCEPTIONS
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OSError _PGF_Error_;
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OSError GetLastPGFError() {
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OSError tmp = _PGF_Error_;
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_PGF_Error_ = NoError;
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return tmp;
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}
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#endif
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#ifdef _DEBUG
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// allows RGB and RGBA image visualization inside Visual Studio Debugger
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struct DebugBGRImage {
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int width, height, pitch;
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BYTE *data;
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} roiimage;
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#endif
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//////////////////////////////////////////////////////////////////////
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// Standard constructor
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CPGFImage::CPGFImage() {
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Init();
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}
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//////////////////////////////////////////////////////////////////////
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void CPGFImage::Init() {
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// init pointers
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m_decoder = nullptr;
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m_encoder = nullptr;
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m_levelLength = nullptr;
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// init members
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#ifdef __PGFROISUPPORT__
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m_streamReinitialized = false;
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#endif
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m_currentLevel = 0;
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m_quant = 0;
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m_userDataPos = 0;
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m_downsample = false;
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m_favorSpeedOverSize = false;
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m_useOMPinEncoder = true;
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m_useOMPinDecoder = true;
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m_cb = nullptr;
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m_cbArg = nullptr;
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m_progressMode = PM_Relative;
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m_percent = 0;
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m_userDataPolicy = UP_CacheAll;
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// init preHeader
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memcpy(m_preHeader.magic, PGFMagic, 3);
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m_preHeader.version = PGFVersion;
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m_preHeader.hSize = 0;
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// init postHeader
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m_postHeader.userData = nullptr;
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m_postHeader.userDataLen = 0;
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m_postHeader.cachedUserDataLen = 0;
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// init channels
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for (int i = 0; i < MaxChannels; i++) {
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m_channel[i] = nullptr;
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m_wtChannel[i] = nullptr;
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}
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// set image width and height
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for (int i = 0; i < MaxChannels; i++) {
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m_width[0] = 0;
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m_height[0] = 0;
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}
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}
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//////////////////////////////////////////////////////////////////////
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// Destructor: Destroy internal data structures.
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CPGFImage::~CPGFImage() {
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m_currentLevel = -100; // unusual value used as marker in Destroy()
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Destroy();
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}
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//////////////////////////////////////////////////////////////////////
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// Destroy internal data structures. Object state after this is the same as after CPGFImage().
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void CPGFImage::Destroy() {
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for (int i = 0; i < m_header.channels; i++) {
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delete m_wtChannel[i]; // also deletes m_channel
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}
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delete[] m_postHeader.userData;
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delete[] m_levelLength;
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delete m_decoder;
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delete m_encoder;
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if (m_currentLevel != -100) Init();
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}
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/////////////////////////////////////////////////////////////////////////////
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// Open a PGF image at current stream position: read pre-header, header, levelLength, and ckeck image type.
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// Precondition: The stream has been opened for reading.
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// It might throw an IOException.
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// @param stream A PGF stream
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void CPGFImage::Open(CPGFStream *stream) {
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ASSERT(stream);
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// create decoder and read PGFPreHeader PGFHeader PGFPostHeader LevelLengths
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m_decoder = new CDecoder(stream, m_preHeader, m_header, m_postHeader, m_levelLength,
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m_userDataPos, m_useOMPinDecoder, m_userDataPolicy);
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if (m_header.nLevels > MaxLevel) ReturnWithError(FormatCannotRead);
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// set current level
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m_currentLevel = m_header.nLevels;
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// set image width and height
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m_width[0] = m_header.width;
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m_height[0] = m_header.height;
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// complete header
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if (!CompleteHeader()) ReturnWithError(FormatCannotRead);
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// interpret quant parameter
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if (m_header.quality > DownsampleThreshold &&
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(m_header.mode == ImageModeRGBColor ||
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m_header.mode == ImageModeRGBA ||
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m_header.mode == ImageModeRGB48 ||
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m_header.mode == ImageModeCMYKColor ||
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m_header.mode == ImageModeCMYK64 ||
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m_header.mode == ImageModeLabColor ||
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m_header.mode == ImageModeLab48)) {
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m_downsample = true;
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m_quant = m_header.quality - 1;
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} else {
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m_downsample = false;
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m_quant = m_header.quality;
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}
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// set channel dimensions (chrominance is subsampled by factor 2)
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if (m_downsample) {
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for (int i=1; i < m_header.channels; i++) {
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m_width[i] = (m_width[0] + 1) >> 1;
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m_height[i] = (m_height[0] + 1) >> 1;
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}
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} else {
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for (int i=1; i < m_header.channels; i++) {
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m_width[i] = m_width[0];
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m_height[i] = m_height[0];
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}
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}
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if (m_header.nLevels > 0) {
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// init wavelet subbands
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for (int i=0; i < m_header.channels; i++) {
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m_wtChannel[i] = new CWaveletTransform(m_width[i], m_height[i], m_header.nLevels);
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}
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// used in Read when PM_Absolute
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m_percent = pow(0.25, m_header.nLevels);
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} else {
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// very small image: we don't use DWT and encoding
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// read channels
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for (int c=0; c < m_header.channels; c++) {
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const UINT32 size = m_width[c]*m_height[c];
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m_channel[c] = new(std::nothrow) DataT[size];
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if (!m_channel[c]) ReturnWithError(InsufficientMemory);
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// read channel data from stream
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for (UINT32 i=0; i < size; i++) {
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int count = DataTSize;
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stream->Read(&count, &m_channel[c][i]);
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if (count != DataTSize) ReturnWithError(MissingData);
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}
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}
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}
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}
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////////////////////////////////////////////////////////////
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bool CPGFImage::CompleteHeader() {
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// set current codec version
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m_header.version = PGFVersionNumber(PGFMajorNumber, PGFYear, PGFWeek);
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if (m_header.mode == ImageModeUnknown) {
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// undefined mode
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switch(m_header.bpp) {
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case 1: m_header.mode = ImageModeBitmap; break;
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case 8: m_header.mode = ImageModeGrayScale; break;
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case 12: m_header.mode = ImageModeRGB12; break;
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case 16: m_header.mode = ImageModeRGB16; break;
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case 24: m_header.mode = ImageModeRGBColor; break;
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case 32: m_header.mode = ImageModeRGBA; break;
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case 48: m_header.mode = ImageModeRGB48; break;
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default: m_header.mode = ImageModeRGBColor; break;
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}
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}
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if (!m_header.bpp) {
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// undefined bpp
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switch(m_header.mode) {
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case ImageModeBitmap:
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m_header.bpp = 1;
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break;
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case ImageModeIndexedColor:
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case ImageModeGrayScale:
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m_header.bpp = 8;
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break;
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case ImageModeRGB12:
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m_header.bpp = 12;
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break;
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case ImageModeRGB16:
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case ImageModeGray16:
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m_header.bpp = 16;
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break;
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case ImageModeRGBColor:
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case ImageModeLabColor:
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m_header.bpp = 24;
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break;
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case ImageModeRGBA:
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case ImageModeCMYKColor:
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case ImageModeGray32:
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m_header.bpp = 32;
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break;
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case ImageModeRGB48:
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case ImageModeLab48:
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m_header.bpp = 48;
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break;
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case ImageModeCMYK64:
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m_header.bpp = 64;
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break;
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default:
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ASSERT(false);
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m_header.bpp = 24;
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}
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}
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if (m_header.mode == ImageModeRGBColor && m_header.bpp == 32) {
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// change mode
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m_header.mode = ImageModeRGBA;
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}
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if (m_header.mode == ImageModeBitmap && m_header.bpp != 1) return false;
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if (m_header.mode == ImageModeIndexedColor && m_header.bpp != 8) return false;
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if (m_header.mode == ImageModeGrayScale && m_header.bpp != 8) return false;
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if (m_header.mode == ImageModeGray16 && m_header.bpp != 16) return false;
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if (m_header.mode == ImageModeGray32 && m_header.bpp != 32) return false;
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if (m_header.mode == ImageModeRGBColor && m_header.bpp != 24) return false;
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if (m_header.mode == ImageModeRGBA && m_header.bpp != 32) return false;
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if (m_header.mode == ImageModeRGB12 && m_header.bpp != 12) return false;
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if (m_header.mode == ImageModeRGB16 && m_header.bpp != 16) return false;
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if (m_header.mode == ImageModeRGB48 && m_header.bpp != 48) return false;
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if (m_header.mode == ImageModeLabColor && m_header.bpp != 24) return false;
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if (m_header.mode == ImageModeLab48 && m_header.bpp != 48) return false;
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if (m_header.mode == ImageModeCMYKColor && m_header.bpp != 32) return false;
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if (m_header.mode == ImageModeCMYK64 && m_header.bpp != 64) return false;
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// set number of channels
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if (!m_header.channels) {
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switch(m_header.mode) {
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case ImageModeBitmap:
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case ImageModeIndexedColor:
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case ImageModeGrayScale:
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case ImageModeGray16:
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case ImageModeGray32:
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m_header.channels = 1;
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break;
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case ImageModeRGBColor:
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case ImageModeRGB12:
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case ImageModeRGB16:
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case ImageModeRGB48:
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case ImageModeLabColor:
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case ImageModeLab48:
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m_header.channels = 3;
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break;
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case ImageModeRGBA:
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case ImageModeCMYKColor:
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case ImageModeCMYK64:
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m_header.channels = 4;
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break;
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default:
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return false;
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}
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}
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// store used bits per channel
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UINT8 bpc = m_header.bpp/m_header.channels;
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if (bpc > 31) bpc = 31;
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if (!m_header.usedBitsPerChannel || m_header.usedBitsPerChannel > bpc) {
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m_header.usedBitsPerChannel = bpc;
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}
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return true;
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}
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//////////////////////////////////////////////////////////////////////
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/// Return user data and size of user data.
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/// Precondition: The PGF image has been opened with a call of Open(...).
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/// In an encoder scenario don't call this method before WriteHeader().
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/// @param cachedSize [out] Size of returned user data in bytes.
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/// @param pTotalSize [optional out] Pointer to return the size of user data stored in image header in bytes.
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/// @return A pointer to user data or nullptr if there is no user data available.
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const UINT8* CPGFImage::GetUserData(UINT32& cachedSize, UINT32* pTotalSize /*= nullptr*/) const {
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cachedSize = m_postHeader.cachedUserDataLen;
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if (pTotalSize) *pTotalSize = m_postHeader.userDataLen;
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return m_postHeader.userData;
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}
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//////////////////////////////////////////////////////////////////////
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/// After you've written a PGF image, you can call this method followed by GetBitmap/GetYUV
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/// to get a quick reconstruction (coded -> decoded image).
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/// It might throw an IOException.
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/// @param level The image level of the resulting image in the internal image buffer.
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void CPGFImage::Reconstruct(int level /*= 0*/) {
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if (m_header.nLevels == 0) {
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// image didn't use wavelet transform
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if (level == 0) {
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for (int i=0; i < m_header.channels; i++) {
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ASSERT(m_wtChannel[i]);
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m_channel[i] = m_wtChannel[i]->GetSubband(0, LL)->GetBuffer();
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}
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}
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} else {
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int currentLevel = m_header.nLevels;
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#ifdef __PGFROISUPPORT__
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if (ROIisSupported()) {
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// enable ROI reading
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SetROI(PGFRect(0, 0, m_header.width, m_header.height));
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}
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#endif
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while (currentLevel > level) {
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for (int i=0; i < m_header.channels; i++) {
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ASSERT(m_wtChannel[i]);
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// dequantize subbands
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if (currentLevel == m_header.nLevels) {
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// last level also has LL band
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m_wtChannel[i]->GetSubband(currentLevel, LL)->Dequantize(m_quant);
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}
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m_wtChannel[i]->GetSubband(currentLevel, HL)->Dequantize(m_quant);
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m_wtChannel[i]->GetSubband(currentLevel, LH)->Dequantize(m_quant);
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m_wtChannel[i]->GetSubband(currentLevel, HH)->Dequantize(m_quant);
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// inverse transform from m_wtChannel to m_channel
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OSError err = m_wtChannel[i]->InverseTransform(currentLevel, &m_width[i], &m_height[i], &m_channel[i]);
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if (err != NoError) ReturnWithError(err);
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ASSERT(m_channel[i]);
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}
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currentLevel--;
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}
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}
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}
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//////////////////////////////////////////////////////////////////////
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// Read and decode some levels of a PGF image at current stream position.
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// A PGF image is structered in levels, numbered between 0 and Levels() - 1.
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// Each level can be seen as a single image, containing the same content
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// as all other levels, but in a different size (width, height).
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// The image size at level i is double the size (width, height) of the image at level i+1.
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// The image at level 0 contains the original size.
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// Precondition: The PGF image has been opened with a call of Open(...).
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// It might throw an IOException.
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// @param level The image level of the resulting image in the internal image buffer.
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// @param cb A pointer to a callback procedure. The procedure is called after reading a single level. If cb returns true, then it stops proceeding.
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// @param data Data Pointer to C++ class container to host callback procedure.
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void CPGFImage::Read(int level /*= 0*/, CallbackPtr cb /*= nullptr*/, void *data /*=nullptr*/) {
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ASSERT((level >= 0 && level < m_header.nLevels) || m_header.nLevels == 0); // m_header.nLevels == 0: image didn't use wavelet transform
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ASSERT(m_decoder);
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#ifdef __PGFROISUPPORT__
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if (ROIisSupported() && m_header.nLevels > 0) {
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// new encoding scheme supporting ROI
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PGFRect rect(0, 0, m_header.width, m_header.height);
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Read(rect, level, cb, data);
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return;
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}
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#endif
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if (m_header.nLevels == 0) {
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if (level == 0) {
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// the data has already been read during open
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// now update progress
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if (cb) {
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if ((*cb)(1.0, true, data)) ReturnWithError(EscapePressed);
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}
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}
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} else {
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const int levelDiff = m_currentLevel - level;
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double percent = (m_progressMode == PM_Relative) ? pow(0.25, levelDiff) : m_percent;
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// encoding scheme without ROI
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while (m_currentLevel > level) {
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for (int i=0; i < m_header.channels; i++) {
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CWaveletTransform* wtChannel = m_wtChannel[i];
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ASSERT(wtChannel);
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// decode file and write stream to m_wtChannel
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if (m_currentLevel == m_header.nLevels) {
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// last level also has LL band
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wtChannel->GetSubband(m_currentLevel, LL)->PlaceTile(*m_decoder, m_quant);
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}
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if (m_preHeader.version & Version5) {
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// since version 5
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wtChannel->GetSubband(m_currentLevel, HL)->PlaceTile(*m_decoder, m_quant);
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wtChannel->GetSubband(m_currentLevel, LH)->PlaceTile(*m_decoder, m_quant);
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} else {
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// until version 4
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m_decoder->DecodeInterleaved(wtChannel, m_currentLevel, m_quant);
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}
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wtChannel->GetSubband(m_currentLevel, HH)->PlaceTile(*m_decoder, m_quant);
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}
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volatile OSError error = NoError; // volatile prevents optimizations
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#ifdef LIBPGF_USE_OPENMP
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#pragma omp parallel for default(shared)
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#endif
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for (int i=0; i < m_header.channels; i++) {
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// inverse transform from m_wtChannel to m_channel
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if (error == NoError) {
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OSError err = m_wtChannel[i]->InverseTransform(m_currentLevel, &m_width[i], &m_height[i], &m_channel[i]);
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if (err != NoError) error = err;
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}
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ASSERT(m_channel[i]);
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}
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if (error != NoError) ReturnWithError(error);
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// set new level: must be done before refresh callback
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m_currentLevel--;
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// now we have to refresh the display
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if (m_cb) m_cb(m_cbArg);
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|
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// now update progress
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if (cb) {
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percent *= 4;
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if (m_progressMode == PM_Absolute) m_percent = percent;
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if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
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}
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|
}
|
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}
|
|
}
|
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|
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#ifdef __PGFROISUPPORT__
|
|
//////////////////////////////////////////////////////////////////////
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|
/// Read and decode rectangular region of interest (ROI) of a PGF image at current stream position.
|
|
/// The origin of the coordinate axis is the top-left corner of the image.
|
|
/// All coordinates are measured in pixels.
|
|
/// It might throw an IOException.
|
|
/// @param rect [inout] Rectangular region of interest (ROI) at level 0. The rect might be cropped.
|
|
/// @param level The image level of the resulting image in the internal image buffer.
|
|
/// @param cb A pointer to a callback procedure. The procedure is called after reading a single level. If cb returns true, then it stops proceeding.
|
|
/// @param data Data Pointer to C++ class container to host callback procedure.
|
|
void CPGFImage::Read(PGFRect& rect, int level /*= 0*/, CallbackPtr cb /*= nullptr*/, void *data /*=nullptr*/) {
|
|
ASSERT((level >= 0 && level < m_header.nLevels) || m_header.nLevels == 0); // m_header.nLevels == 0: image didn't use wavelet transform
|
|
ASSERT(m_decoder);
|
|
|
|
if (m_header.nLevels == 0 || !ROIisSupported()) {
|
|
rect.left = rect.top = 0;
|
|
rect.right = m_header.width; rect.bottom = m_header.height;
|
|
Read(level, cb, data);
|
|
} else {
|
|
ASSERT(ROIisSupported());
|
|
// new encoding scheme supporting ROI
|
|
ASSERT(rect.left < m_header.width && rect.top < m_header.height);
|
|
|
|
// check rectangle
|
|
if (rect.right == 0 || rect.right > m_header.width) rect.right = m_header.width;
|
|
if (rect.bottom == 0 || rect.bottom > m_header.height) rect.bottom = m_header.height;
|
|
|
|
const int levelDiff = m_currentLevel - level;
|
|
double percent = (m_progressMode == PM_Relative) ? pow(0.25, levelDiff) : m_percent;
|
|
|
|
// check level difference
|
|
if (levelDiff <= 0) {
|
|
// it is a new read call, probably with a new ROI
|
|
m_currentLevel = m_header.nLevels;
|
|
m_decoder->SetStreamPosToData();
|
|
}
|
|
|
|
// enable ROI decoding and reading
|
|
SetROI(rect);
|
|
|
|
while (m_currentLevel > level) {
|
|
for (int i=0; i < m_header.channels; i++) {
|
|
CWaveletTransform* wtChannel = m_wtChannel[i];
|
|
ASSERT(wtChannel);
|
|
|
|
// get number of tiles and tile indices
|
|
const UINT32 nTiles = wtChannel->GetNofTiles(m_currentLevel); // independent of ROI
|
|
|
|
// decode file and write stream to m_wtChannel
|
|
if (m_currentLevel == m_header.nLevels) { // last level also has LL band
|
|
ASSERT(nTiles == 1);
|
|
m_decoder->GetNextMacroBlock();
|
|
wtChannel->GetSubband(m_currentLevel, LL)->PlaceTile(*m_decoder, m_quant);
|
|
}
|
|
for (UINT32 tileY=0; tileY < nTiles; tileY++) {
|
|
for (UINT32 tileX=0; tileX < nTiles; tileX++) {
|
|
// check relevance of tile
|
|
if (wtChannel->TileIsRelevant(m_currentLevel, tileX, tileY)) {
|
|
m_decoder->GetNextMacroBlock();
|
|
wtChannel->GetSubband(m_currentLevel, HL)->PlaceTile(*m_decoder, m_quant, true, tileX, tileY);
|
|
wtChannel->GetSubband(m_currentLevel, LH)->PlaceTile(*m_decoder, m_quant, true, tileX, tileY);
|
|
wtChannel->GetSubband(m_currentLevel, HH)->PlaceTile(*m_decoder, m_quant, true, tileX, tileY);
|
|
} else {
|
|
// skip tile
|
|
m_decoder->SkipTileBuffer();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
volatile OSError error = NoError; // volatile prevents optimizations
|
|
#ifdef LIBPGF_USE_OPENMP
|
|
#pragma omp parallel for default(shared)
|
|
#endif
|
|
for (int i=0; i < m_header.channels; i++) {
|
|
// inverse transform from m_wtChannel to m_channel
|
|
if (error == NoError) {
|
|
OSError err = m_wtChannel[i]->InverseTransform(m_currentLevel, &m_width[i], &m_height[i], &m_channel[i]);
|
|
if (err != NoError) error = err;
|
|
}
|
|
ASSERT(m_channel[i]);
|
|
}
|
|
if (error != NoError) ReturnWithError(error);
|
|
|
|
// set new level: must be done before refresh callback
|
|
m_currentLevel--;
|
|
|
|
// now we have to refresh the display
|
|
if (m_cb) m_cb(m_cbArg);
|
|
|
|
// now update progress
|
|
if (cb) {
|
|
percent *= 4;
|
|
if (m_progressMode == PM_Absolute) m_percent = percent;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
/// Return ROI of channel 0 at current level in pixels.
|
|
/// The returned rect is only valid after reading a ROI.
|
|
/// @return ROI in pixels
|
|
PGFRect CPGFImage::ComputeLevelROI() const {
|
|
if (m_currentLevel == 0) {
|
|
return m_roi;
|
|
} else {
|
|
const UINT32 rLeft = LevelSizeL(m_roi.left, m_currentLevel);
|
|
const UINT32 rRight = LevelSizeL(m_roi.right, m_currentLevel);
|
|
const UINT32 rTop = LevelSizeL(m_roi.top, m_currentLevel);
|
|
const UINT32 rBottom = LevelSizeL(m_roi.bottom, m_currentLevel);
|
|
return PGFRect(rLeft, rTop, rRight - rLeft, rBottom - rTop);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
/// Returns aligned ROI in pixels of current level of channel c
|
|
/// @param c A channel index
|
|
PGFRect CPGFImage::GetAlignedROI(int c /*= 0*/) const {
|
|
PGFRect roi(0, 0, m_width[c], m_height[c]);
|
|
|
|
if (ROIisSupported()) {
|
|
ASSERT(m_wtChannel[c]);
|
|
|
|
roi = m_wtChannel[c]->GetAlignedROI(m_currentLevel);
|
|
}
|
|
ASSERT(roi.Width() == m_width[c]);
|
|
ASSERT(roi.Height() == m_height[c]);
|
|
return roi;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
/// Compute ROIs for each channel and each level <= current level
|
|
/// Called inside of Read(rect, ...).
|
|
/// @param rect rectangular region of interest (ROI) at level 0
|
|
void CPGFImage::SetROI(PGFRect rect) {
|
|
ASSERT(m_decoder);
|
|
ASSERT(ROIisSupported());
|
|
ASSERT(m_wtChannel[0]);
|
|
|
|
// store ROI for a later call of GetBitmap
|
|
m_roi = rect;
|
|
|
|
// enable ROI decoding
|
|
m_decoder->SetROI();
|
|
|
|
// prepare wavelet channels for using ROI
|
|
m_wtChannel[0]->SetROI(rect);
|
|
|
|
if (m_downsample && m_header.channels > 1) {
|
|
// all further channels are downsampled, therefore downsample ROI
|
|
rect.left >>= 1;
|
|
rect.top >>= 1;
|
|
rect.right = (rect.right + 1) >> 1;
|
|
rect.bottom = (rect.bottom + 1) >> 1;
|
|
}
|
|
for (int i=1; i < m_header.channels; i++) {
|
|
ASSERT(m_wtChannel[i]);
|
|
m_wtChannel[i]->SetROI(rect);
|
|
}
|
|
}
|
|
|
|
#endif // __PGFROISUPPORT__
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
/// Return the length of all encoded headers in bytes.
|
|
/// Precondition: The PGF image has been opened with a call of Open(...).
|
|
/// @return The length of all encoded headers in bytes
|
|
UINT32 CPGFImage::GetEncodedHeaderLength() const {
|
|
ASSERT(m_decoder);
|
|
return m_decoder->GetEncodedHeaderLength();
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
/// Reads the encoded PGF header and copies it to a target buffer.
|
|
/// Precondition: The PGF image has been opened with a call of Open(...).
|
|
/// It might throw an IOException.
|
|
/// @param target The target buffer
|
|
/// @param targetLen The length of the target buffer in bytes
|
|
/// @return The number of bytes copied to the target buffer
|
|
UINT32 CPGFImage::ReadEncodedHeader(UINT8* target, UINT32 targetLen) const {
|
|
ASSERT(target);
|
|
ASSERT(targetLen > 0);
|
|
ASSERT(m_decoder);
|
|
|
|
// reset stream position
|
|
m_decoder->SetStreamPosToStart();
|
|
|
|
// compute number of bytes to read
|
|
UINT32 len = __min(targetLen, GetEncodedHeaderLength());
|
|
|
|
// read data
|
|
len = m_decoder->ReadEncodedData(target, len);
|
|
ASSERT(len >= 0 && len <= targetLen);
|
|
|
|
return len;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
/// Reset stream position to start of PGF pre-header or start of data. Must not be called before Open() or before Write().
|
|
/// Use this method after Read() if you want to read the same image several times, e.g. reading different ROIs.
|
|
/// @param startOfData true: you want to read the same image several times. false: resets stream position to the initial position
|
|
void CPGFImage::ResetStreamPos(bool startOfData) {
|
|
if (startOfData) {
|
|
ASSERT(m_decoder);
|
|
m_decoder->SetStreamPosToData();
|
|
} else {
|
|
if (m_decoder) {
|
|
m_decoder->SetStreamPosToStart();
|
|
} else if (m_encoder) {
|
|
m_encoder->SetStreamPosToStart();
|
|
} else {
|
|
ASSERT(false);
|
|
}
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
/// Reads the data of an encoded PGF level and copies it to a target buffer
|
|
/// without decoding.
|
|
/// Precondition: The PGF image has been opened with a call of Open(...).
|
|
/// It might throw an IOException.
|
|
/// @param level The image level
|
|
/// @param target The target buffer
|
|
/// @param targetLen The length of the target buffer in bytes
|
|
/// @return The number of bytes copied to the target buffer
|
|
UINT32 CPGFImage::ReadEncodedData(int level, UINT8* target, UINT32 targetLen) const {
|
|
ASSERT(level >= 0 && level < m_header.nLevels);
|
|
ASSERT(target);
|
|
ASSERT(targetLen > 0);
|
|
ASSERT(m_decoder);
|
|
|
|
// reset stream position
|
|
m_decoder->SetStreamPosToData();
|
|
|
|
// position stream
|
|
UINT64 offset = 0;
|
|
|
|
for (int i=m_header.nLevels - 1; i > level; i--) {
|
|
offset += m_levelLength[m_header.nLevels - 1 - i];
|
|
}
|
|
m_decoder->Skip(offset);
|
|
|
|
// compute number of bytes to read
|
|
UINT32 len = __min(targetLen, GetEncodedLevelLength(level));
|
|
|
|
// read data
|
|
len = m_decoder->ReadEncodedData(target, len);
|
|
ASSERT(len >= 0 && len <= targetLen);
|
|
|
|
return len;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
/// Set maximum intensity value for image modes with more than eight bits per channel.
|
|
/// Call this method after SetHeader, but before ImportBitmap.
|
|
/// @param maxValue The maximum intensity value.
|
|
void CPGFImage::SetMaxValue(UINT32 maxValue) {
|
|
const BYTE bpc = m_header.bpp/m_header.channels;
|
|
BYTE pot = 0;
|
|
|
|
while(maxValue > 0) {
|
|
pot++;
|
|
maxValue >>= 1;
|
|
}
|
|
// store bits per channel
|
|
if (pot > bpc) pot = bpc;
|
|
if (pot > 31) pot = 31;
|
|
m_header.usedBitsPerChannel = pot;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
/// Returns number of used bits per input/output image channel.
|
|
/// Precondition: header must be initialized.
|
|
/// @return number of used bits per input/output image channel.
|
|
BYTE CPGFImage::UsedBitsPerChannel() const {
|
|
const BYTE bpc = m_header.bpp/m_header.channels;
|
|
|
|
if (bpc > 8) {
|
|
return m_header.usedBitsPerChannel;
|
|
} else {
|
|
return bpc;
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
/// Return major version
|
|
BYTE CPGFImage::CodecMajorVersion(BYTE version) {
|
|
if (version & Version7) return 7;
|
|
if (version & Version6) return 6;
|
|
if (version & Version5) return 5;
|
|
if (version & Version2) return 2;
|
|
return 1;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////
|
|
// Import an image from a specified image buffer.
|
|
// This method is usually called before Write(...) and after SetHeader(...).
|
|
// It might throw an IOException.
|
|
// The absolute value of pitch is the number of bytes of an image row.
|
|
// If pitch is negative, then buff points to the last row of a bottom-up image (first byte on last row).
|
|
// If pitch is positive, then buff points to the first row of a top-down image (first byte).
|
|
// The sequence of input channels in the input image buffer does not need to be the same as expected from PGF. In case of different sequences you have to
|
|
// provide a channelMap of size of expected channels (depending on image mode). For example, PGF expects in RGB color mode a channel sequence BGR.
|
|
// If your provided image buffer contains a channel sequence ARGB, then the channelMap looks like { 3, 2, 1 }.
|
|
// @param pitch The number of bytes of a row of the image buffer.
|
|
// @param buff An image buffer.
|
|
// @param bpp The number of bits per pixel used in image buffer.
|
|
// @param channelMap A integer array containing the mapping of input channel ordering to expected channel ordering.
|
|
// @param cb A pointer to a callback procedure. The procedure is called after each imported buffer row. If cb returns true, then it stops proceeding.
|
|
// @param data Data Pointer to C++ class container to host callback procedure.
|
|
void CPGFImage::ImportBitmap(int pitch, UINT8 *buff, BYTE bpp, int channelMap[] /*= nullptr */, CallbackPtr cb /*= nullptr*/, void *data /*=nullptr*/) {
|
|
ASSERT(buff);
|
|
ASSERT(m_channel[0]);
|
|
|
|
// color transform
|
|
RgbToYuv(pitch, buff, bpp, channelMap, cb, data);
|
|
|
|
if (m_downsample) {
|
|
// Subsampling of the chrominance and alpha channels
|
|
for (int i=1; i < m_header.channels; i++) {
|
|
Downsample(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
/////////////////////////////////////////////////////////////////
|
|
// Bilinerar Subsampling of channel ch by a factor 2
|
|
// Called before Write()
|
|
void CPGFImage::Downsample(int ch) {
|
|
ASSERT(ch > 0);
|
|
|
|
const int w = m_width[0];
|
|
const int w2 = w/2;
|
|
const int h2 = m_height[0]/2;
|
|
const int oddW = w%2; // don't use bool -> problems with MaxSpeed optimization
|
|
const int oddH = m_height[0]%2; // "
|
|
int loPos = 0;
|
|
int hiPos = w;
|
|
int sampledPos = 0;
|
|
DataT* buff = m_channel[ch]; ASSERT(buff);
|
|
|
|
for (int i=0; i < h2; i++) {
|
|
for (int j=0; j < w2; j++) {
|
|
// compute average of pixel block
|
|
buff[sampledPos] = (buff[loPos] + buff[loPos + 1] + buff[hiPos] + buff[hiPos + 1]) >> 2;
|
|
loPos += 2; hiPos += 2;
|
|
sampledPos++;
|
|
}
|
|
if (oddW) {
|
|
buff[sampledPos] = (buff[loPos] + buff[hiPos]) >> 1;
|
|
loPos++; hiPos++;
|
|
sampledPos++;
|
|
}
|
|
loPos += w; hiPos += w;
|
|
}
|
|
if (oddH) {
|
|
for (int j=0; j < w2; j++) {
|
|
buff[sampledPos] = (buff[loPos] + buff[loPos+1]) >> 1;
|
|
loPos += 2; hiPos += 2;
|
|
sampledPos++;
|
|
}
|
|
if (oddW) {
|
|
buff[sampledPos] = buff[loPos];
|
|
}
|
|
}
|
|
|
|
// downsampled image has half width and half height
|
|
m_width[ch] = (m_width[ch] + 1)/2;
|
|
m_height[ch] = (m_height[ch] + 1)/2;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
void CPGFImage::ComputeLevels() {
|
|
const int maxThumbnailWidth = 20*FilterSize;
|
|
const int m = __min(m_header.width, m_header.height);
|
|
int s = m;
|
|
|
|
if (m_header.nLevels < 1 || m_header.nLevels > MaxLevel) {
|
|
m_header.nLevels = 1;
|
|
// compute a good value depending on the size of the image
|
|
while (s > maxThumbnailWidth) {
|
|
m_header.nLevels++;
|
|
s >>= 1;
|
|
}
|
|
}
|
|
|
|
int levels = m_header.nLevels; // we need a signed value during level reduction
|
|
|
|
// reduce number of levels if the image size is smaller than FilterSize*(2^levels)
|
|
s = FilterSize*(1 << levels); // must be at least the double filter size because of subsampling
|
|
while (m < s) {
|
|
levels--;
|
|
s >>= 1;
|
|
}
|
|
if (levels > MaxLevel) m_header.nLevels = MaxLevel;
|
|
else if (levels < 0) m_header.nLevels = 0;
|
|
else m_header.nLevels = (UINT8)levels;
|
|
|
|
// used in Write when PM_Absolute
|
|
m_percent = pow(0.25, m_header.nLevels);
|
|
|
|
ASSERT(0 <= m_header.nLevels && m_header.nLevels <= MaxLevel);
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
/// Set PGF header and user data.
|
|
/// Precondition: The PGF image has been never opened with Open(...).
|
|
/// It might throw an IOException.
|
|
/// @param header A valid and already filled in PGF header structure
|
|
/// @param flags A combination of additional version flags. In case you use level-wise encoding then set flag = PGFROI.
|
|
/// @param userData A user-defined memory block containing any kind of cached metadata.
|
|
/// @param userDataLength The size of user-defined memory block in bytes
|
|
void CPGFImage::SetHeader(const PGFHeader& header, BYTE flags /*=0*/, const UINT8* userData /*= 0*/, UINT32 userDataLength /*= 0*/) {
|
|
ASSERT(!m_decoder); // current image must be closed
|
|
ASSERT(header.quality <= MaxQuality);
|
|
ASSERT(userDataLength <= MaxUserDataSize);
|
|
|
|
// init state
|
|
#ifdef __PGFROISUPPORT__
|
|
m_streamReinitialized = false;
|
|
#endif
|
|
|
|
// init preHeader
|
|
memcpy(m_preHeader.magic, PGFMagic, 3);
|
|
m_preHeader.version = PGFVersion | flags;
|
|
m_preHeader.hSize = HeaderSize;
|
|
|
|
// copy header
|
|
memcpy(&m_header, &header, HeaderSize);
|
|
|
|
// check quality
|
|
if (m_header.quality > MaxQuality) m_header.quality = MaxQuality;
|
|
|
|
// complete header
|
|
CompleteHeader();
|
|
|
|
// check and set number of levels
|
|
ComputeLevels();
|
|
|
|
// check for downsample
|
|
if (m_header.quality > DownsampleThreshold && (m_header.mode == ImageModeRGBColor ||
|
|
m_header.mode == ImageModeRGBA ||
|
|
m_header.mode == ImageModeRGB48 ||
|
|
m_header.mode == ImageModeCMYKColor ||
|
|
m_header.mode == ImageModeCMYK64 ||
|
|
m_header.mode == ImageModeLabColor ||
|
|
m_header.mode == ImageModeLab48)) {
|
|
m_downsample = true;
|
|
m_quant = m_header.quality - 1;
|
|
} else {
|
|
m_downsample = false;
|
|
m_quant = m_header.quality;
|
|
}
|
|
|
|
// update header size and copy user data
|
|
if (m_header.mode == ImageModeIndexedColor) {
|
|
// update header size
|
|
m_preHeader.hSize += ColorTableSize;
|
|
}
|
|
if (userDataLength && userData) {
|
|
if (userDataLength > MaxUserDataSize) userDataLength = MaxUserDataSize;
|
|
m_postHeader.userData = new(std::nothrow) UINT8[userDataLength];
|
|
if (!m_postHeader.userData) ReturnWithError(InsufficientMemory);
|
|
m_postHeader.userDataLen = m_postHeader.cachedUserDataLen = userDataLength;
|
|
memcpy(m_postHeader.userData, userData, userDataLength);
|
|
// update header size
|
|
m_preHeader.hSize += userDataLength;
|
|
}
|
|
|
|
// allocate channels
|
|
for (int i=0; i < m_header.channels; i++) {
|
|
// set current width and height
|
|
m_width[i] = m_header.width;
|
|
m_height[i] = m_header.height;
|
|
|
|
// allocate channels
|
|
ASSERT(!m_channel[i]);
|
|
m_channel[i] = new(std::nothrow) DataT[m_header.width*m_header.height];
|
|
if (!m_channel[i]) {
|
|
if (i) i--;
|
|
while(i) {
|
|
delete[] m_channel[i]; m_channel[i] = 0;
|
|
i--;
|
|
}
|
|
ReturnWithError(InsufficientMemory);
|
|
}
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////
|
|
/// Create wavelet transform channels and encoder. Write header at current stream position.
|
|
/// Performs forward FWT.
|
|
/// Call this method before your first call of Write(int level) or WriteImage(), but after SetHeader().
|
|
/// This method is called inside of Write(stream, ...).
|
|
/// It might throw an IOException.
|
|
/// @param stream A PGF stream
|
|
/// @return The number of bytes written into stream.
|
|
UINT32 CPGFImage::WriteHeader(CPGFStream* stream) {
|
|
ASSERT(m_header.nLevels <= MaxLevel);
|
|
ASSERT(m_header.quality <= MaxQuality); // quality is already initialized
|
|
|
|
if (m_header.nLevels > 0) {
|
|
volatile OSError error = NoError; // volatile prevents optimizations
|
|
// create new wt channels
|
|
#ifdef LIBPGF_USE_OPENMP
|
|
#pragma omp parallel for default(shared)
|
|
#endif
|
|
for (int i=0; i < m_header.channels; i++) {
|
|
DataT *temp = nullptr;
|
|
if (error == NoError) {
|
|
if (m_wtChannel[i]) {
|
|
ASSERT(m_channel[i]);
|
|
// copy m_channel to temp
|
|
int size = m_height[i]*m_width[i];
|
|
temp = new(std::nothrow) DataT[size];
|
|
if (temp) {
|
|
memcpy(temp, m_channel[i], size*DataTSize);
|
|
delete m_wtChannel[i]; // also deletes m_channel
|
|
m_channel[i] = nullptr;
|
|
} else {
|
|
error = InsufficientMemory;
|
|
}
|
|
}
|
|
if (error == NoError) {
|
|
if (temp) {
|
|
ASSERT(!m_channel[i]);
|
|
m_channel[i] = temp;
|
|
}
|
|
m_wtChannel[i] = new CWaveletTransform(m_width[i], m_height[i], m_header.nLevels, m_channel[i]);
|
|
if (m_wtChannel[i]) {
|
|
#ifdef __PGFROISUPPORT__
|
|
m_wtChannel[i]->SetROI(PGFRect(0, 0, m_width[i], m_height[i]));
|
|
#endif
|
|
|
|
// wavelet subband decomposition
|
|
for (int l=0; error == NoError && l < m_header.nLevels; l++) {
|
|
OSError err = m_wtChannel[i]->ForwardTransform(l, m_quant);
|
|
if (err != NoError) error = err;
|
|
}
|
|
} else {
|
|
delete[] m_channel[i];
|
|
error = InsufficientMemory;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (error != NoError) {
|
|
// free already allocated memory
|
|
for (int i=0; i < m_header.channels; i++) {
|
|
delete m_wtChannel[i];
|
|
}
|
|
ReturnWithError(error);
|
|
}
|
|
|
|
m_currentLevel = m_header.nLevels;
|
|
|
|
// create encoder, write headers and user data, but not level-length area
|
|
m_encoder = new CEncoder(stream, m_preHeader, m_header, m_postHeader, m_userDataPos, m_useOMPinEncoder);
|
|
if (m_favorSpeedOverSize) m_encoder->FavorSpeedOverSize();
|
|
|
|
#ifdef __PGFROISUPPORT__
|
|
if (ROIisSupported()) {
|
|
// new encoding scheme supporting ROI
|
|
m_encoder->SetROI();
|
|
}
|
|
#endif
|
|
|
|
} else {
|
|
// very small image: we don't use DWT and encoding
|
|
|
|
// create encoder, write headers and user data, but not level-length area
|
|
m_encoder = new CEncoder(stream, m_preHeader, m_header, m_postHeader, m_userDataPos, m_useOMPinEncoder);
|
|
}
|
|
|
|
INT64 nBytes = m_encoder->ComputeHeaderLength();
|
|
return (nBytes > 0) ? (UINT32)nBytes : 0;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////
|
|
// Encode and write next level of a PGF image at current stream position.
|
|
// A PGF image is structered in levels, numbered between 0 and Levels() - 1.
|
|
// Each level can be seen as a single image, containing the same content
|
|
// as all other levels, but in a different size (width, height).
|
|
// The image size at level i is double the size (width, height) of the image at level i+1.
|
|
// The image at level 0 contains the original size.
|
|
// It might throw an IOException.
|
|
void CPGFImage::WriteLevel() {
|
|
ASSERT(m_encoder);
|
|
ASSERT(m_currentLevel > 0);
|
|
ASSERT(m_header.nLevels > 0);
|
|
|
|
#ifdef __PGFROISUPPORT__
|
|
if (ROIisSupported()) {
|
|
const int lastChannel = m_header.channels - 1;
|
|
|
|
for (int i=0; i < m_header.channels; i++) {
|
|
// get number of tiles and tile indices
|
|
const UINT32 nTiles = m_wtChannel[i]->GetNofTiles(m_currentLevel);
|
|
const UINT32 lastTile = nTiles - 1;
|
|
|
|
if (m_currentLevel == m_header.nLevels) {
|
|
// last level also has LL band
|
|
ASSERT(nTiles == 1);
|
|
m_wtChannel[i]->GetSubband(m_currentLevel, LL)->ExtractTile(*m_encoder);
|
|
m_encoder->EncodeTileBuffer(); // encode macro block with tile-end = true
|
|
}
|
|
for (UINT32 tileY=0; tileY < nTiles; tileY++) {
|
|
for (UINT32 tileX=0; tileX < nTiles; tileX++) {
|
|
// extract tile to macro block and encode already filled macro blocks with tile-end = false
|
|
m_wtChannel[i]->GetSubband(m_currentLevel, HL)->ExtractTile(*m_encoder, true, tileX, tileY);
|
|
m_wtChannel[i]->GetSubband(m_currentLevel, LH)->ExtractTile(*m_encoder, true, tileX, tileY);
|
|
m_wtChannel[i]->GetSubband(m_currentLevel, HH)->ExtractTile(*m_encoder, true, tileX, tileY);
|
|
if (i == lastChannel && tileY == lastTile && tileX == lastTile) {
|
|
// all necessary data are buffered. next call of EncodeTileBuffer will write the last piece of data of the current level.
|
|
m_encoder->SetEncodedLevel(--m_currentLevel);
|
|
}
|
|
m_encoder->EncodeTileBuffer(); // encode last macro block with tile-end = true
|
|
}
|
|
}
|
|
}
|
|
} else
|
|
#endif
|
|
{
|
|
for (int i=0; i < m_header.channels; i++) {
|
|
ASSERT(m_wtChannel[i]);
|
|
if (m_currentLevel == m_header.nLevels) {
|
|
// last level also has LL band
|
|
m_wtChannel[i]->GetSubband(m_currentLevel, LL)->ExtractTile(*m_encoder);
|
|
}
|
|
//encoder.EncodeInterleaved(m_wtChannel[i], m_currentLevel, m_quant); // until version 4
|
|
m_wtChannel[i]->GetSubband(m_currentLevel, HL)->ExtractTile(*m_encoder); // since version 5
|
|
m_wtChannel[i]->GetSubband(m_currentLevel, LH)->ExtractTile(*m_encoder); // since version 5
|
|
m_wtChannel[i]->GetSubband(m_currentLevel, HH)->ExtractTile(*m_encoder);
|
|
}
|
|
|
|
// all necessary data are buffered. next call of EncodeBuffer will write the last piece of data of the current level.
|
|
m_encoder->SetEncodedLevel(--m_currentLevel);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
// Return written levelLength bytes
|
|
UINT32 CPGFImage::UpdatePostHeaderSize() {
|
|
ASSERT(m_encoder);
|
|
|
|
INT64 offset = m_encoder->ComputeOffset(); ASSERT(offset >= 0);
|
|
|
|
if (offset > 0) {
|
|
// update post-header size and rewrite pre-header
|
|
m_preHeader.hSize += (UINT32)offset;
|
|
m_encoder->UpdatePostHeaderSize(m_preHeader);
|
|
}
|
|
|
|
// write dummy levelLength into stream
|
|
return m_encoder->WriteLevelLength(m_levelLength);
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
/// Encode and write an image at current stream position.
|
|
/// Call this method after WriteHeader().
|
|
/// In case you want to write uncached metadata,
|
|
/// then do that after WriteHeader() and before WriteImage().
|
|
/// This method is called inside of Write(stream, ...).
|
|
/// It might throw an IOException.
|
|
/// @param stream A PGF stream
|
|
/// @param cb A pointer to a callback procedure. The procedure is called after writing a single level. If cb returns true, then it stops proceeding.
|
|
/// @param data Data Pointer to C++ class container to host callback procedure.
|
|
/// @return The number of bytes written into stream.
|
|
UINT32 CPGFImage::WriteImage(CPGFStream* stream, CallbackPtr cb /*= nullptr*/, void *data /*= nullptr*/) {
|
|
ASSERT(stream);
|
|
ASSERT(m_preHeader.hSize);
|
|
|
|
int levels = m_header.nLevels;
|
|
double percent = pow(0.25, levels);
|
|
|
|
// update post-header size, rewrite pre-header, and write dummy levelLength
|
|
UINT32 nWrittenBytes = UpdatePostHeaderSize();
|
|
|
|
if (levels == 0) {
|
|
// for very small images: write channels uncoded
|
|
for (int c=0; c < m_header.channels; c++) {
|
|
const UINT32 size = m_width[c]*m_height[c];
|
|
|
|
// write channel data into stream
|
|
for (UINT32 i=0; i < size; i++) {
|
|
int count = DataTSize;
|
|
stream->Write(&count, &m_channel[c][i]);
|
|
}
|
|
}
|
|
|
|
// now update progress
|
|
if (cb) {
|
|
if ((*cb)(1, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
|
|
} else {
|
|
// encode quantized wavelet coefficients and write to PGF file
|
|
// encode subbands, higher levels first
|
|
// color channels are interleaved
|
|
|
|
// encode all levels
|
|
for (m_currentLevel = levels; m_currentLevel > 0; ) {
|
|
WriteLevel(); // decrements m_currentLevel
|
|
|
|
// now update progress
|
|
if (cb) {
|
|
percent *= 4;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
|
|
// flush encoder and write level lengths
|
|
m_encoder->Flush();
|
|
}
|
|
|
|
// update level lengths
|
|
nWrittenBytes += m_encoder->UpdateLevelLength(); // return written image bytes
|
|
|
|
// delete encoder
|
|
delete m_encoder; m_encoder = nullptr;
|
|
|
|
ASSERT(!m_encoder);
|
|
|
|
return nWrittenBytes;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////
|
|
/// Encode and write an entire PGF image (header and image) at current stream position.
|
|
/// A PGF image is structered in levels, numbered between 0 and Levels() - 1.
|
|
/// Each level can be seen as a single image, containing the same content
|
|
/// as all other levels, but in a different size (width, height).
|
|
/// The image size at level i is double the size (width, height) of the image at level i+1.
|
|
/// The image at level 0 contains the original size.
|
|
/// Precondition: the PGF image contains a valid header (see also SetHeader(...)).
|
|
/// It might throw an IOException.
|
|
/// @param stream A PGF stream
|
|
/// @param nWrittenBytes [in-out] The number of bytes written into stream are added to the input value.
|
|
/// @param cb A pointer to a callback procedure. The procedure is called after writing a single level. If cb returns true, then it stops proceeding.
|
|
/// @param data Data Pointer to C++ class container to host callback procedure.
|
|
void CPGFImage::Write(CPGFStream* stream, UINT32* nWrittenBytes /*= nullptr*/, CallbackPtr cb /*= nullptr*/, void *data /*=nullptr*/) {
|
|
ASSERT(stream);
|
|
ASSERT(m_preHeader.hSize);
|
|
|
|
// create wavelet transform channels and encoder
|
|
UINT32 nBytes = WriteHeader(stream);
|
|
|
|
// write image
|
|
nBytes += WriteImage(stream, cb, data);
|
|
|
|
// return written bytes
|
|
if (nWrittenBytes) *nWrittenBytes += nBytes;
|
|
}
|
|
|
|
#ifdef __PGFROISUPPORT__
|
|
//////////////////////////////////////////////////////////////////
|
|
// Encode and write down to given level at current stream position.
|
|
// A PGF image is structered in levels, numbered between 0 and Levels() - 1.
|
|
// Each level can be seen as a single image, containing the same content
|
|
// as all other levels, but in a different size (width, height).
|
|
// The image size at level i is double the size (width, height) of the image at level i+1.
|
|
// The image at level 0 contains the original size.
|
|
// Precondition: the PGF image contains a valid header (see also SetHeader(...)) and WriteHeader() has been called before.
|
|
// The ROI encoding scheme is used.
|
|
// It might throw an IOException.
|
|
// @param level The image level of the resulting image in the internal image buffer.
|
|
// @param cb A pointer to a callback procedure. The procedure is called after writing a single level. If cb returns true, then it stops proceeding.
|
|
// @param data Data Pointer to C++ class container to host callback procedure.
|
|
// @return The number of bytes written into stream.
|
|
UINT32 CPGFImage::Write(int level, CallbackPtr cb /*= nullptr*/, void *data /*=nullptr*/) {
|
|
ASSERT(m_header.nLevels > 0);
|
|
ASSERT(0 <= level && level < m_header.nLevels);
|
|
ASSERT(m_encoder);
|
|
ASSERT(ROIisSupported());
|
|
|
|
const int levelDiff = m_currentLevel - level;
|
|
double percent = (m_progressMode == PM_Relative) ? pow(0.25, levelDiff) : m_percent;
|
|
UINT32 nWrittenBytes = 0;
|
|
|
|
if (m_currentLevel == m_header.nLevels) {
|
|
// update post-header size, rewrite pre-header, and write dummy levelLength
|
|
nWrittenBytes = UpdatePostHeaderSize();
|
|
} else {
|
|
// prepare for next level: save current file position, because the stream might have been reinitialized
|
|
if (m_encoder->ComputeBufferLength()) {
|
|
m_streamReinitialized = true;
|
|
}
|
|
}
|
|
|
|
// encoding scheme with ROI
|
|
while (m_currentLevel > level) {
|
|
WriteLevel(); // decrements m_currentLevel
|
|
|
|
if (m_levelLength) {
|
|
nWrittenBytes += m_levelLength[m_header.nLevels - m_currentLevel - 1];
|
|
}
|
|
|
|
// now update progress
|
|
if (cb) {
|
|
percent *= 4;
|
|
if (m_progressMode == PM_Absolute) m_percent = percent;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
|
|
// automatically closing
|
|
if (m_currentLevel == 0) {
|
|
if (!m_streamReinitialized) {
|
|
// don't write level lengths, if the stream position changed inbetween two Write operations
|
|
m_encoder->UpdateLevelLength();
|
|
}
|
|
// delete encoder
|
|
delete m_encoder; m_encoder = nullptr;
|
|
}
|
|
|
|
return nWrittenBytes;
|
|
}
|
|
#endif // __PGFROISUPPORT__
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////
|
|
// Check for valid import image mode.
|
|
// @param mode Image mode
|
|
// @return True if an image of given mode can be imported with ImportBitmap(...)
|
|
bool CPGFImage::ImportIsSupported(BYTE mode) {
|
|
size_t size = DataTSize;
|
|
|
|
if (size >= 2) {
|
|
switch(mode) {
|
|
case ImageModeBitmap:
|
|
case ImageModeIndexedColor:
|
|
case ImageModeGrayScale:
|
|
case ImageModeRGBColor:
|
|
case ImageModeCMYKColor:
|
|
case ImageModeHSLColor:
|
|
case ImageModeHSBColor:
|
|
//case ImageModeDuotone:
|
|
case ImageModeLabColor:
|
|
case ImageModeRGB12:
|
|
case ImageModeRGB16:
|
|
case ImageModeRGBA:
|
|
return true;
|
|
}
|
|
}
|
|
if (size >= 3) {
|
|
switch(mode) {
|
|
case ImageModeGray16:
|
|
case ImageModeRGB48:
|
|
case ImageModeLab48:
|
|
case ImageModeCMYK64:
|
|
//case ImageModeDuotone16:
|
|
return true;
|
|
}
|
|
}
|
|
if (size >=4) {
|
|
switch(mode) {
|
|
case ImageModeGray32:
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
/// Retrieves red, green, blue (RGB) color values from a range of entries in the palette of the DIB section.
|
|
/// It might throw an IOException.
|
|
/// @param iFirstColor The color table index of the first entry to retrieve.
|
|
/// @param nColors The number of color table entries to retrieve.
|
|
/// @param prgbColors A pointer to the array of RGBQUAD structures to retrieve the color table entries.
|
|
void CPGFImage::GetColorTable(UINT32 iFirstColor, UINT32 nColors, RGBQUAD* prgbColors) const {
|
|
if (iFirstColor + nColors > ColorTableLen) ReturnWithError(ColorTableError);
|
|
|
|
for (UINT32 i=iFirstColor, j=0; j < nColors; i++, j++) {
|
|
prgbColors[j] = m_postHeader.clut[i];
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
/// Sets the red, green, blue (RGB) color values for a range of entries in the palette (clut).
|
|
/// It might throw an IOException.
|
|
/// @param iFirstColor The color table index of the first entry to set.
|
|
/// @param nColors The number of color table entries to set.
|
|
/// @param prgbColors A pointer to the array of RGBQUAD structures to set the color table entries.
|
|
void CPGFImage::SetColorTable(UINT32 iFirstColor, UINT32 nColors, const RGBQUAD* prgbColors) {
|
|
if (iFirstColor + nColors > ColorTableLen) ReturnWithError(ColorTableError);
|
|
|
|
for (UINT32 i=iFirstColor, j=0; j < nColors; i++, j++) {
|
|
m_postHeader.clut[i] = prgbColors[j];
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////
|
|
// Buffer transform from interleaved to channel seperated format
|
|
// the absolute value of pitch is the number of bytes of an image row
|
|
// if pitch is negative, then buff points to the last row of a bottom-up image (first byte on last row)
|
|
// if pitch is positive, then buff points to the first row of a top-down image (first byte)
|
|
// bpp is the number of bits per pixel used in image buffer buff
|
|
//
|
|
// RGB is transformed into YUV format (ordering of buffer data is BGR[A])
|
|
// Y = (R + 2*G + B)/4 -128
|
|
// U = R - G
|
|
// V = B - G
|
|
//
|
|
// Since PGF Codec version 2.0 images are stored in top-down direction
|
|
//
|
|
// The sequence of input channels in the input image buffer does not need to be the same as expected from PGF. In case of different sequences you have to
|
|
// provide a channelMap of size of expected channels (depending on image mode). For example, PGF expects in RGB color mode a channel sequence BGR.
|
|
// If your provided image buffer contains a channel sequence ARGB, then the channelMap looks like { 3, 2, 1 }.
|
|
void CPGFImage::RgbToYuv(int pitch, UINT8* buff, BYTE bpp, int channelMap[], CallbackPtr cb, void *data /*=nullptr*/) {
|
|
ASSERT(buff);
|
|
UINT32 yPos = 0, cnt = 0;
|
|
double percent = 0;
|
|
const double dP = 1.0/m_header.height;
|
|
int defMap[] = { 0, 1, 2, 3, 4, 5, 6, 7 }; ASSERT(sizeof(defMap)/sizeof(defMap[0]) == MaxChannels);
|
|
|
|
if (channelMap == nullptr) channelMap = defMap;
|
|
|
|
switch(m_header.mode) {
|
|
case ImageModeBitmap:
|
|
{
|
|
ASSERT(m_header.channels == 1);
|
|
ASSERT(m_header.bpp == 1);
|
|
ASSERT(bpp == 1);
|
|
|
|
const UINT32 w = m_header.width;
|
|
const UINT32 w2 = (m_header.width + 7)/8;
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
|
|
// new unpacked version since version 7
|
|
for (UINT32 h = 0; h < m_header.height; h++) {
|
|
if (cb) {
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
percent += dP;
|
|
}
|
|
cnt = 0;
|
|
for (UINT32 j = 0; j < w2; j++) {
|
|
UINT8 byte = buff[j];
|
|
for (int k = 0; k < 8; k++) {
|
|
UINT8 bit = (byte & 0x80) >> 7;
|
|
if (cnt < w) y[yPos++] = bit;
|
|
byte <<= 1;
|
|
cnt++;
|
|
}
|
|
}
|
|
buff += pitch;
|
|
}
|
|
/* old version: packed values: 8 pixels in 1 byte
|
|
for (UINT32 h = 0; h < m_header.height; h++) {
|
|
if (cb) {
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
percent += dP;
|
|
}
|
|
|
|
for (UINT32 j = 0; j < w2; j++) {
|
|
y[yPos++] = buff[j] - YUVoffset8;
|
|
}
|
|
// version 5 and 6
|
|
// for (UINT32 j = w2; j < w; j++) {
|
|
// y[yPos++] = YUVoffset8;
|
|
//}
|
|
buff += pitch;
|
|
}
|
|
*/
|
|
}
|
|
break;
|
|
case ImageModeIndexedColor:
|
|
case ImageModeGrayScale:
|
|
case ImageModeHSLColor:
|
|
case ImageModeHSBColor:
|
|
case ImageModeLabColor:
|
|
{
|
|
ASSERT(m_header.channels >= 1);
|
|
ASSERT(m_header.bpp == m_header.channels*8);
|
|
ASSERT(bpp%8 == 0);
|
|
const int channels = bpp/8; ASSERT(channels >= m_header.channels);
|
|
|
|
for (UINT32 h=0; h < m_header.height; h++) {
|
|
if (cb) {
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
percent += dP;
|
|
}
|
|
|
|
cnt = 0;
|
|
for (UINT32 w=0; w < m_header.width; w++) {
|
|
for (int c=0; c < m_header.channels; c++) {
|
|
m_channel[c][yPos] = buff[cnt + channelMap[c]] - YUVoffset8;
|
|
}
|
|
cnt += channels;
|
|
yPos++;
|
|
}
|
|
buff += pitch;
|
|
}
|
|
}
|
|
break;
|
|
case ImageModeGray16:
|
|
case ImageModeLab48:
|
|
{
|
|
ASSERT(m_header.channels >= 1);
|
|
ASSERT(m_header.bpp == m_header.channels*16);
|
|
ASSERT(bpp%16 == 0);
|
|
|
|
UINT16 *buff16 = (UINT16 *)buff;
|
|
const int pitch16 = pitch/2;
|
|
const int channels = bpp/16; ASSERT(channels >= m_header.channels);
|
|
const int shift = 16 - UsedBitsPerChannel(); ASSERT(shift >= 0);
|
|
const DataT yuvOffset16 = 1 << (UsedBitsPerChannel() - 1);
|
|
|
|
for (UINT32 h=0; h < m_header.height; h++) {
|
|
if (cb) {
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
percent += dP;
|
|
}
|
|
|
|
cnt = 0;
|
|
for (UINT32 w=0; w < m_header.width; w++) {
|
|
for (int c=0; c < m_header.channels; c++) {
|
|
m_channel[c][yPos] = (buff16[cnt + channelMap[c]] >> shift) - yuvOffset16;
|
|
}
|
|
cnt += channels;
|
|
yPos++;
|
|
}
|
|
buff16 += pitch16;
|
|
}
|
|
}
|
|
break;
|
|
case ImageModeRGBColor:
|
|
{
|
|
ASSERT(m_header.channels == 3);
|
|
ASSERT(m_header.bpp == m_header.channels*8);
|
|
ASSERT(bpp%8 == 0);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
const int channels = bpp/8; ASSERT(channels >= m_header.channels);
|
|
UINT8 b, g, r;
|
|
|
|
for (UINT32 h=0; h < m_header.height; h++) {
|
|
if (cb) {
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
percent += dP;
|
|
}
|
|
|
|
cnt = 0;
|
|
for (UINT32 w=0; w < m_header.width; w++) {
|
|
b = buff[cnt + channelMap[0]];
|
|
g = buff[cnt + channelMap[1]];
|
|
r = buff[cnt + channelMap[2]];
|
|
// Yuv
|
|
y[yPos] = ((b + (g << 1) + r) >> 2) - YUVoffset8;
|
|
u[yPos] = r - g;
|
|
v[yPos] = b - g;
|
|
yPos++;
|
|
cnt += channels;
|
|
}
|
|
buff += pitch;
|
|
}
|
|
}
|
|
break;
|
|
case ImageModeRGB48:
|
|
{
|
|
ASSERT(m_header.channels == 3);
|
|
ASSERT(m_header.bpp == m_header.channels*16);
|
|
ASSERT(bpp%16 == 0);
|
|
|
|
UINT16 *buff16 = (UINT16 *)buff;
|
|
const int pitch16 = pitch/2;
|
|
const int channels = bpp/16; ASSERT(channels >= m_header.channels);
|
|
const int shift = 16 - UsedBitsPerChannel(); ASSERT(shift >= 0);
|
|
const DataT yuvOffset16 = 1 << (UsedBitsPerChannel() - 1);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
UINT16 b, g, r;
|
|
|
|
for (UINT32 h=0; h < m_header.height; h++) {
|
|
if (cb) {
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
percent += dP;
|
|
}
|
|
|
|
cnt = 0;
|
|
for (UINT32 w=0; w < m_header.width; w++) {
|
|
b = buff16[cnt + channelMap[0]] >> shift;
|
|
g = buff16[cnt + channelMap[1]] >> shift;
|
|
r = buff16[cnt + channelMap[2]] >> shift;
|
|
// Yuv
|
|
y[yPos] = ((b + (g << 1) + r) >> 2) - yuvOffset16;
|
|
u[yPos] = r - g;
|
|
v[yPos] = b - g;
|
|
yPos++;
|
|
cnt += channels;
|
|
}
|
|
buff16 += pitch16;
|
|
}
|
|
}
|
|
break;
|
|
case ImageModeRGBA:
|
|
case ImageModeCMYKColor:
|
|
{
|
|
ASSERT(m_header.channels == 4);
|
|
ASSERT(m_header.bpp == m_header.channels*8);
|
|
ASSERT(bpp%8 == 0);
|
|
const int channels = bpp/8; ASSERT(channels >= m_header.channels);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
DataT* a = m_channel[3]; ASSERT(a);
|
|
UINT8 b, g, r;
|
|
|
|
for (UINT32 h=0; h < m_header.height; h++) {
|
|
if (cb) {
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
percent += dP;
|
|
}
|
|
|
|
cnt = 0;
|
|
for (UINT32 w=0; w < m_header.width; w++) {
|
|
b = buff[cnt + channelMap[0]];
|
|
g = buff[cnt + channelMap[1]];
|
|
r = buff[cnt + channelMap[2]];
|
|
// Yuv
|
|
y[yPos] = ((b + (g << 1) + r) >> 2) - YUVoffset8;
|
|
u[yPos] = r - g;
|
|
v[yPos] = b - g;
|
|
a[yPos++] = buff[cnt + channelMap[3]] - YUVoffset8;
|
|
cnt += channels;
|
|
}
|
|
buff += pitch;
|
|
}
|
|
}
|
|
break;
|
|
case ImageModeCMYK64:
|
|
{
|
|
ASSERT(m_header.channels == 4);
|
|
ASSERT(m_header.bpp == m_header.channels*16);
|
|
ASSERT(bpp%16 == 0);
|
|
|
|
UINT16 *buff16 = (UINT16 *)buff;
|
|
const int pitch16 = pitch/2;
|
|
const int channels = bpp/16; ASSERT(channels >= m_header.channels);
|
|
const int shift = 16 - UsedBitsPerChannel(); ASSERT(shift >= 0);
|
|
const DataT yuvOffset16 = 1 << (UsedBitsPerChannel() - 1);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
DataT* a = m_channel[3]; ASSERT(a);
|
|
UINT16 b, g, r;
|
|
|
|
for (UINT32 h=0; h < m_header.height; h++) {
|
|
if (cb) {
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
percent += dP;
|
|
}
|
|
|
|
cnt = 0;
|
|
for (UINT32 w=0; w < m_header.width; w++) {
|
|
b = buff16[cnt + channelMap[0]] >> shift;
|
|
g = buff16[cnt + channelMap[1]] >> shift;
|
|
r = buff16[cnt + channelMap[2]] >> shift;
|
|
// Yuv
|
|
y[yPos] = ((b + (g << 1) + r) >> 2) - yuvOffset16;
|
|
u[yPos] = r - g;
|
|
v[yPos] = b - g;
|
|
a[yPos++] = (buff16[cnt + channelMap[3]] >> shift) - yuvOffset16;
|
|
cnt += channels;
|
|
}
|
|
buff16 += pitch16;
|
|
}
|
|
}
|
|
break;
|
|
#ifdef __PGF32SUPPORT__
|
|
case ImageModeGray32:
|
|
{
|
|
ASSERT(m_header.channels == 1);
|
|
ASSERT(m_header.bpp == 32);
|
|
ASSERT(bpp == 32);
|
|
ASSERT(DataTSize == sizeof(UINT32));
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
|
|
UINT32 *buff32 = (UINT32 *)buff;
|
|
const int pitch32 = pitch/4;
|
|
const int shift = 31 - UsedBitsPerChannel(); ASSERT(shift >= 0);
|
|
const DataT yuvOffset31 = 1 << (UsedBitsPerChannel() - 1);
|
|
|
|
for (UINT32 h=0; h < m_header.height; h++) {
|
|
if (cb) {
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
percent += dP;
|
|
}
|
|
|
|
for (UINT32 w=0; w < m_header.width; w++) {
|
|
y[yPos++] = (buff32[w] >> shift) - yuvOffset31;
|
|
}
|
|
buff32 += pitch32;
|
|
}
|
|
}
|
|
break;
|
|
#endif
|
|
case ImageModeRGB12:
|
|
{
|
|
ASSERT(m_header.channels == 3);
|
|
ASSERT(m_header.bpp == m_header.channels*4);
|
|
ASSERT(bpp == m_header.channels*4);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
|
|
UINT8 rgb = 0, b, g, r;
|
|
|
|
for (UINT32 h=0; h < m_header.height; h++) {
|
|
if (cb) {
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
percent += dP;
|
|
}
|
|
|
|
cnt = 0;
|
|
for (UINT32 w=0; w < m_header.width; w++) {
|
|
if (w%2 == 0) {
|
|
// even pixel position
|
|
rgb = buff[cnt];
|
|
b = rgb & 0x0F;
|
|
g = (rgb & 0xF0) >> 4;
|
|
cnt++;
|
|
rgb = buff[cnt];
|
|
r = rgb & 0x0F;
|
|
} else {
|
|
// odd pixel position
|
|
b = (rgb & 0xF0) >> 4;
|
|
cnt++;
|
|
rgb = buff[cnt];
|
|
g = rgb & 0x0F;
|
|
r = (rgb & 0xF0) >> 4;
|
|
cnt++;
|
|
}
|
|
|
|
// Yuv
|
|
y[yPos] = ((b + (g << 1) + r) >> 2) - YUVoffset4;
|
|
u[yPos] = r - g;
|
|
v[yPos] = b - g;
|
|
yPos++;
|
|
}
|
|
buff += pitch;
|
|
}
|
|
}
|
|
break;
|
|
case ImageModeRGB16:
|
|
{
|
|
ASSERT(m_header.channels == 3);
|
|
ASSERT(m_header.bpp == 16);
|
|
ASSERT(bpp == 16);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
|
|
UINT16 *buff16 = (UINT16 *)buff;
|
|
UINT16 rgb, b, g, r;
|
|
const int pitch16 = pitch/2;
|
|
|
|
for (UINT32 h=0; h < m_header.height; h++) {
|
|
if (cb) {
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
percent += dP;
|
|
}
|
|
for (UINT32 w=0; w < m_header.width; w++) {
|
|
rgb = buff16[w];
|
|
r = (rgb & 0xF800) >> 10; // highest 5 bits
|
|
g = (rgb & 0x07E0) >> 5; // middle 6 bits
|
|
b = (rgb & 0x001F) << 1; // lowest 5 bits
|
|
// Yuv
|
|
y[yPos] = ((b + (g << 1) + r) >> 2) - YUVoffset6;
|
|
u[yPos] = r - g;
|
|
v[yPos] = b - g;
|
|
yPos++;
|
|
}
|
|
|
|
buff16 += pitch16;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
ASSERT(false);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////
|
|
// Get image data in interleaved format: (ordering of RGB data is BGR[A])
|
|
// Upsampling, YUV to RGB transform and interleaving are done here to reduce the number
|
|
// of passes over the data.
|
|
// The absolute value of pitch is the number of bytes of an image row of the given image buffer.
|
|
// If pitch is negative, then the image buffer must point to the last row of a bottom-up image (first byte on last row).
|
|
// if pitch is positive, then the image buffer must point to the first row of a top-down image (first byte).
|
|
// The sequence of output channels in the output image buffer does not need to be the same as provided by PGF. In case of different sequences you have to
|
|
// provide a channelMap of size of expected channels (depending on image mode). For example, PGF provides a channel sequence BGR in RGB color mode.
|
|
// If your provided image buffer expects a channel sequence ARGB, then the channelMap looks like { 3, 2, 1 }.
|
|
// It might throw an IOException.
|
|
// @param pitch The number of bytes of a row of the image buffer.
|
|
// @param buff An image buffer.
|
|
// @param bpp The number of bits per pixel used in image buffer.
|
|
// @param channelMap A integer array containing the mapping of PGF channel ordering to expected channel ordering.
|
|
// @param cb A pointer to a callback procedure. The procedure is called after each copied buffer row. If cb returns true, then it stops proceeding.
|
|
// @param data Data Pointer to C++ class container to host callback procedure.
|
|
void CPGFImage::GetBitmap(int pitch, UINT8* buff, BYTE bpp, int channelMap[] /*= nullptr */, CallbackPtr cb /*= nullptr*/, void *data /*=nullptr*/) const {
|
|
ASSERT(buff);
|
|
UINT32 w = m_width[0]; // width of decoded image
|
|
UINT32 h = m_height[0]; // height of decoded image
|
|
UINT32 yw = w; // y-channel width
|
|
UINT32 uw = m_width[1]; // u-channel width
|
|
UINT32 roiOffsetX = 0;
|
|
UINT32 roiOffsetY = 0;
|
|
UINT32 yOffset = 0;
|
|
UINT32 uOffset = 0;
|
|
|
|
#ifdef __PGFROISUPPORT__
|
|
const PGFRect& roi = GetAlignedROI(); // in pixels, roi is usually larger than levelRoi
|
|
ASSERT(w == roi.Width() && h == roi.Height());
|
|
const PGFRect levelRoi = ComputeLevelROI();
|
|
ASSERT(roi.left <= levelRoi.left && levelRoi.right <= roi.right);
|
|
ASSERT(roi.top <= levelRoi.top && levelRoi.bottom <= roi.bottom);
|
|
|
|
if (ROIisSupported() && (levelRoi.Width() < w || levelRoi.Height() < h)) {
|
|
// ROI is used
|
|
w = levelRoi.Width();
|
|
h = levelRoi.Height();
|
|
roiOffsetX = levelRoi.left - roi.left;
|
|
roiOffsetY = levelRoi.top - roi.top;
|
|
yOffset = roiOffsetX + roiOffsetY*yw;
|
|
|
|
if (m_downsample) {
|
|
const PGFRect& downsampledRoi = GetAlignedROI(1);
|
|
uOffset = levelRoi.left/2 - downsampledRoi.left + (levelRoi.top/2 - downsampledRoi.top)*m_width[1];
|
|
} else {
|
|
uOffset = yOffset;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
const double dP = 1.0/h;
|
|
int defMap[] = { 0, 1, 2, 3, 4, 5, 6, 7 }; ASSERT(sizeof(defMap)/sizeof(defMap[0]) == MaxChannels);
|
|
if (channelMap == nullptr) channelMap = defMap;
|
|
DataT uAvg, vAvg;
|
|
double percent = 0;
|
|
UINT32 i, j;
|
|
|
|
switch(m_header.mode) {
|
|
case ImageModeBitmap:
|
|
{
|
|
ASSERT(m_header.channels == 1);
|
|
ASSERT(m_header.bpp == 1);
|
|
ASSERT(bpp == 1);
|
|
|
|
const UINT32 w2 = (w + 7)/8;
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
|
|
if (m_preHeader.version & Version7) {
|
|
// new unpacked version has a little better compression ratio
|
|
// since version 7
|
|
for (i = 0; i < h; i++) {
|
|
UINT32 cnt = 0;
|
|
for (j = 0; j < w2; j++) {
|
|
UINT8 byte = 0;
|
|
for (int k = 0; k < 8; k++) {
|
|
byte <<= 1;
|
|
UINT8 bit = 0;
|
|
if (cnt < w) {
|
|
bit = y[yOffset + cnt] & 1;
|
|
}
|
|
byte |= bit;
|
|
cnt++;
|
|
}
|
|
buff[j] = byte;
|
|
}
|
|
yOffset += yw;
|
|
buff += pitch;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
} else {
|
|
// old versions
|
|
// packed pixels: 8 pixel in 1 byte of channel[0]
|
|
if (!(m_preHeader.version & Version5)) yw = w2; // not version 5 or 6
|
|
yOffset = roiOffsetX/8 + roiOffsetY*yw; // 1 byte in y contains 8 pixel values
|
|
for (i = 0; i < h; i++) {
|
|
for (j = 0; j < w2; j++) {
|
|
buff[j] = Clamp8(y[yOffset + j] + YUVoffset8);
|
|
}
|
|
yOffset += yw;
|
|
buff += pitch;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case ImageModeIndexedColor:
|
|
case ImageModeGrayScale:
|
|
case ImageModeHSLColor:
|
|
case ImageModeHSBColor:
|
|
{
|
|
ASSERT(m_header.channels >= 1);
|
|
ASSERT(m_header.bpp == m_header.channels*8);
|
|
ASSERT(bpp%8 == 0);
|
|
|
|
UINT32 cnt, channels = bpp/8; ASSERT(channels >= m_header.channels);
|
|
|
|
for (i=0; i < h; i++) {
|
|
UINT32 yPos = yOffset;
|
|
cnt = 0;
|
|
for (j=0; j < w; j++) {
|
|
for (UINT32 c=0; c < m_header.channels; c++) {
|
|
buff[cnt + channelMap[c]] = Clamp8(m_channel[c][yPos] + YUVoffset8);
|
|
}
|
|
cnt += channels;
|
|
yPos++;
|
|
}
|
|
yOffset += yw;
|
|
buff += pitch;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case ImageModeGray16:
|
|
{
|
|
ASSERT(m_header.channels >= 1);
|
|
ASSERT(m_header.bpp == m_header.channels*16);
|
|
|
|
const DataT yuvOffset16 = 1 << (UsedBitsPerChannel() - 1);
|
|
UINT32 cnt, channels;
|
|
|
|
if (bpp%16 == 0) {
|
|
const int shift = 16 - UsedBitsPerChannel(); ASSERT(shift >= 0);
|
|
UINT16 *buff16 = (UINT16 *)buff;
|
|
int pitch16 = pitch/2;
|
|
channels = bpp/16; ASSERT(channels >= m_header.channels);
|
|
|
|
for (i=0; i < h; i++) {
|
|
UINT32 yPos = yOffset;
|
|
cnt = 0;
|
|
for (j=0; j < w; j++) {
|
|
for (UINT32 c=0; c < m_header.channels; c++) {
|
|
buff16[cnt + channelMap[c]] = Clamp16((m_channel[c][yPos] + yuvOffset16) << shift);
|
|
}
|
|
cnt += channels;
|
|
yPos++;
|
|
}
|
|
yOffset += yw;
|
|
buff16 += pitch16;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
} else {
|
|
ASSERT(bpp%8 == 0);
|
|
const int shift = __max(0, UsedBitsPerChannel() - 8);
|
|
channels = bpp/8; ASSERT(channels >= m_header.channels);
|
|
|
|
for (i=0; i < h; i++) {
|
|
UINT32 yPos = yOffset;
|
|
cnt = 0;
|
|
for (j=0; j < w; j++) {
|
|
for (UINT32 c=0; c < m_header.channels; c++) {
|
|
buff[cnt + channelMap[c]] = Clamp8((m_channel[c][yPos] + yuvOffset16) >> shift);
|
|
}
|
|
cnt += channels;
|
|
yPos++;
|
|
}
|
|
yOffset += yw;
|
|
buff += pitch;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case ImageModeRGBColor:
|
|
{
|
|
ASSERT(m_header.channels == 3);
|
|
ASSERT(m_header.bpp == m_header.channels*8);
|
|
ASSERT(bpp%8 == 0);
|
|
ASSERT(bpp >= m_header.bpp);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
UINT8 *buffg = &buff[channelMap[1]],
|
|
*buffr = &buff[channelMap[2]],
|
|
*buffb = &buff[channelMap[0]];
|
|
UINT8 g;
|
|
UINT32 cnt, channels = bpp/8;
|
|
|
|
if (m_downsample) {
|
|
for (i=0; i < h; i++) {
|
|
UINT32 uPos = uOffset;
|
|
UINT32 yPos = yOffset;
|
|
cnt = 0;
|
|
for (j=0; j < w; j++) {
|
|
// u and v are downsampled
|
|
uAvg = u[uPos];
|
|
vAvg = v[uPos];
|
|
// Yuv
|
|
buffg[cnt] = g = Clamp8(y[yPos] + YUVoffset8 - ((uAvg + vAvg ) >> 2)); // must be logical shift operator
|
|
buffr[cnt] = Clamp8(uAvg + g);
|
|
buffb[cnt] = Clamp8(vAvg + g);
|
|
cnt += channels;
|
|
if (j & 1) uPos++;
|
|
yPos++;
|
|
}
|
|
if (i & 1) uOffset += uw;
|
|
yOffset += yw;
|
|
buffb += pitch;
|
|
buffg += pitch;
|
|
buffr += pitch;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
|
|
} else {
|
|
for (i=0; i < h; i++) {
|
|
cnt = 0;
|
|
UINT32 yPos = yOffset;
|
|
for (j = 0; j < w; j++) {
|
|
uAvg = u[yPos];
|
|
vAvg = v[yPos];
|
|
// Yuv
|
|
buffg[cnt] = g = Clamp8(y[yPos] + YUVoffset8 - ((uAvg + vAvg ) >> 2)); // must be logical shift operator
|
|
buffr[cnt] = Clamp8(uAvg + g);
|
|
buffb[cnt] = Clamp8(vAvg + g);
|
|
cnt += channels;
|
|
yPos++;
|
|
}
|
|
yOffset += yw;
|
|
buffb += pitch;
|
|
buffg += pitch;
|
|
buffr += pitch;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case ImageModeRGB48:
|
|
{
|
|
ASSERT(m_header.channels == 3);
|
|
ASSERT(m_header.bpp == 48);
|
|
|
|
const DataT yuvOffset16 = 1 << (UsedBitsPerChannel() - 1);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
UINT32 cnt, channels;
|
|
DataT g;
|
|
|
|
if (bpp >= 48 && bpp%16 == 0) {
|
|
const int shift = 16 - UsedBitsPerChannel(); ASSERT(shift >= 0);
|
|
UINT16 *buff16 = (UINT16 *)buff;
|
|
int pitch16 = pitch/2;
|
|
channels = bpp/16; ASSERT(channels >= m_header.channels);
|
|
|
|
for (i=0; i < h; i++) {
|
|
UINT32 uPos = uOffset;
|
|
UINT32 yPos = yOffset;
|
|
cnt = 0;
|
|
for (j=0; j < w; j++) {
|
|
uAvg = u[uPos];
|
|
vAvg = v[uPos];
|
|
// Yuv
|
|
g = y[yPos] + yuvOffset16 - ((uAvg + vAvg ) >> 2); // must be logical shift operator
|
|
buff16[cnt + channelMap[1]] = Clamp16(g << shift);
|
|
buff16[cnt + channelMap[2]] = Clamp16((uAvg + g) << shift);
|
|
buff16[cnt + channelMap[0]] = Clamp16((vAvg + g) << shift);
|
|
cnt += channels;
|
|
if (!m_downsample || (j & 1)) uPos++;
|
|
yPos++;
|
|
}
|
|
if (!m_downsample || (i & 1)) uOffset += uw;
|
|
yOffset += yw;
|
|
buff16 += pitch16;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
} else {
|
|
ASSERT(bpp%8 == 0);
|
|
const int shift = __max(0, UsedBitsPerChannel() - 8);
|
|
channels = bpp/8; ASSERT(channels >= m_header.channels);
|
|
|
|
for (i=0; i < h; i++) {
|
|
UINT32 uPos = uOffset;
|
|
UINT32 yPos = yOffset;
|
|
cnt = 0;
|
|
for (j=0; j < w; j++) {
|
|
uAvg = u[uPos];
|
|
vAvg = v[uPos];
|
|
// Yuv
|
|
g = y[yPos] + yuvOffset16 - ((uAvg + vAvg ) >> 2); // must be logical shift operator
|
|
buff[cnt + channelMap[1]] = Clamp8(g >> shift);
|
|
buff[cnt + channelMap[2]] = Clamp8((uAvg + g) >> shift);
|
|
buff[cnt + channelMap[0]] = Clamp8((vAvg + g) >> shift);
|
|
cnt += channels;
|
|
if (!m_downsample || (j & 1)) uPos++;
|
|
yPos++;
|
|
}
|
|
if (!m_downsample || (i & 1)) uOffset += uw;
|
|
yOffset += yw;
|
|
buff += pitch;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case ImageModeLabColor:
|
|
{
|
|
ASSERT(m_header.channels == 3);
|
|
ASSERT(m_header.bpp == m_header.channels*8);
|
|
ASSERT(bpp%8 == 0);
|
|
|
|
DataT* l = m_channel[0]; ASSERT(l);
|
|
DataT* a = m_channel[1]; ASSERT(a);
|
|
DataT* b = m_channel[2]; ASSERT(b);
|
|
UINT32 cnt, channels = bpp/8; ASSERT(channels >= m_header.channels);
|
|
|
|
for (i=0; i < h; i++) {
|
|
UINT32 uPos = uOffset;
|
|
UINT32 yPos = yOffset;
|
|
cnt = 0;
|
|
for (j=0; j < w; j++) {
|
|
uAvg = a[uPos];
|
|
vAvg = b[uPos];
|
|
buff[cnt + channelMap[0]] = Clamp8(l[yPos] + YUVoffset8);
|
|
buff[cnt + channelMap[1]] = Clamp8(uAvg + YUVoffset8);
|
|
buff[cnt + channelMap[2]] = Clamp8(vAvg + YUVoffset8);
|
|
cnt += channels;
|
|
if (!m_downsample || (j & 1)) uPos++;
|
|
yPos++;
|
|
}
|
|
if (!m_downsample || (i & 1)) uOffset += uw;
|
|
yOffset += yw;
|
|
buff += pitch;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case ImageModeLab48:
|
|
{
|
|
ASSERT(m_header.channels == 3);
|
|
ASSERT(m_header.bpp == m_header.channels*16);
|
|
|
|
const DataT yuvOffset16 = 1 << (UsedBitsPerChannel() - 1);
|
|
|
|
DataT* l = m_channel[0]; ASSERT(l);
|
|
DataT* a = m_channel[1]; ASSERT(a);
|
|
DataT* b = m_channel[2]; ASSERT(b);
|
|
UINT32 cnt, channels;
|
|
|
|
if (bpp%16 == 0) {
|
|
const int shift = 16 - UsedBitsPerChannel(); ASSERT(shift >= 0);
|
|
UINT16 *buff16 = (UINT16 *)buff;
|
|
int pitch16 = pitch/2;
|
|
channels = bpp/16; ASSERT(channels >= m_header.channels);
|
|
|
|
for (i=0; i < h; i++) {
|
|
UINT32 uPos = uOffset;
|
|
UINT32 yPos = yOffset;
|
|
cnt = 0;
|
|
for (j=0; j < w; j++) {
|
|
uAvg = a[uPos];
|
|
vAvg = b[uPos];
|
|
buff16[cnt + channelMap[0]] = Clamp16((l[yPos] + yuvOffset16) << shift);
|
|
buff16[cnt + channelMap[1]] = Clamp16((uAvg + yuvOffset16) << shift);
|
|
buff16[cnt + channelMap[2]] = Clamp16((vAvg + yuvOffset16) << shift);
|
|
cnt += channels;
|
|
if (!m_downsample || (j & 1)) uPos++;
|
|
yPos++;
|
|
}
|
|
if (!m_downsample || (i & 1)) uOffset += uw;
|
|
yOffset += yw;
|
|
buff16 += pitch16;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
} else {
|
|
ASSERT(bpp%8 == 0);
|
|
const int shift = __max(0, UsedBitsPerChannel() - 8);
|
|
channels = bpp/8; ASSERT(channels >= m_header.channels);
|
|
|
|
for (i=0; i < h; i++) {
|
|
UINT32 uPos = uOffset;
|
|
UINT32 yPos = yOffset;
|
|
cnt = 0;
|
|
for (j=0; j < w; j++) {
|
|
uAvg = a[uPos];
|
|
vAvg = b[uPos];
|
|
buff[cnt + channelMap[0]] = Clamp8((l[yPos] + yuvOffset16) >> shift);
|
|
buff[cnt + channelMap[1]] = Clamp8((uAvg + yuvOffset16) >> shift);
|
|
buff[cnt + channelMap[2]] = Clamp8((vAvg + yuvOffset16) >> shift);
|
|
cnt += channels;
|
|
if (!m_downsample || (j & 1)) uPos++;
|
|
yPos++;
|
|
}
|
|
if (!m_downsample || (i & 1)) uOffset += uw;
|
|
yOffset += yw;
|
|
buff += pitch;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case ImageModeRGBA:
|
|
case ImageModeCMYKColor:
|
|
{
|
|
ASSERT(m_header.channels == 4);
|
|
ASSERT(m_header.bpp == m_header.channels*8);
|
|
ASSERT(bpp%8 == 0);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
DataT* a = m_channel[3]; ASSERT(a);
|
|
UINT8 g, aAvg;
|
|
UINT32 cnt, channels = bpp/8; ASSERT(channels >= m_header.channels);
|
|
|
|
for (i=0; i < h; i++) {
|
|
UINT32 uPos = uOffset;
|
|
UINT32 yPos = yOffset;
|
|
cnt = 0;
|
|
for (j=0; j < w; j++) {
|
|
uAvg = u[uPos];
|
|
vAvg = v[uPos];
|
|
aAvg = Clamp8(a[uPos] + YUVoffset8);
|
|
// Yuv
|
|
buff[cnt + channelMap[1]] = g = Clamp8(y[yPos] + YUVoffset8 - ((uAvg + vAvg ) >> 2)); // must be logical shift operator
|
|
buff[cnt + channelMap[2]] = Clamp8(uAvg + g);
|
|
buff[cnt + channelMap[0]] = Clamp8(vAvg + g);
|
|
buff[cnt + channelMap[3]] = aAvg;
|
|
cnt += channels;
|
|
if (!m_downsample || (j & 1)) uPos++;
|
|
yPos++;
|
|
}
|
|
if (!m_downsample || (i & 1)) uOffset += uw;
|
|
yOffset += yw;
|
|
buff += pitch;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case ImageModeCMYK64:
|
|
{
|
|
ASSERT(m_header.channels == 4);
|
|
ASSERT(m_header.bpp == 64);
|
|
|
|
const DataT yuvOffset16 = 1 << (UsedBitsPerChannel() - 1);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
DataT* a = m_channel[3]; ASSERT(a);
|
|
DataT g, aAvg;
|
|
UINT32 cnt, channels;
|
|
|
|
if (bpp%16 == 0) {
|
|
const int shift = 16 - UsedBitsPerChannel(); ASSERT(shift >= 0);
|
|
UINT16 *buff16 = (UINT16 *)buff;
|
|
int pitch16 = pitch/2;
|
|
channels = bpp/16; ASSERT(channels >= m_header.channels);
|
|
|
|
for (i=0; i < h; i++) {
|
|
UINT32 uPos = uOffset;
|
|
UINT32 yPos = yOffset;
|
|
cnt = 0;
|
|
for (j=0; j < w; j++) {
|
|
uAvg = u[uPos];
|
|
vAvg = v[uPos];
|
|
aAvg = a[uPos] + yuvOffset16;
|
|
// Yuv
|
|
g = y[yPos] + yuvOffset16 - ((uAvg + vAvg ) >> 2); // must be logical shift operator
|
|
buff16[cnt + channelMap[1]] = Clamp16(g << shift);
|
|
buff16[cnt + channelMap[2]] = Clamp16((uAvg + g) << shift);
|
|
buff16[cnt + channelMap[0]] = Clamp16((vAvg + g) << shift);
|
|
buff16[cnt + channelMap[3]] = Clamp16(aAvg << shift);
|
|
cnt += channels;
|
|
if (!m_downsample || (j & 1)) uPos++;
|
|
yPos++;
|
|
}
|
|
if (!m_downsample || (i & 1)) uOffset += uw;
|
|
yOffset += yw;
|
|
buff16 += pitch16;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
} else {
|
|
ASSERT(bpp%8 == 0);
|
|
const int shift = __max(0, UsedBitsPerChannel() - 8);
|
|
channels = bpp/8; ASSERT(channels >= m_header.channels);
|
|
|
|
for (i=0; i < h; i++) {
|
|
UINT32 uPos = uOffset;
|
|
UINT32 yPos = yOffset;
|
|
cnt = 0;
|
|
for (j=0; j < w; j++) {
|
|
uAvg = u[uPos];
|
|
vAvg = v[uPos];
|
|
aAvg = a[uPos] + yuvOffset16;
|
|
// Yuv
|
|
g = y[yPos] + yuvOffset16 - ((uAvg + vAvg ) >> 2); // must be logical shift operator
|
|
buff[cnt + channelMap[1]] = Clamp8(g >> shift);
|
|
buff[cnt + channelMap[2]] = Clamp8((uAvg + g) >> shift);
|
|
buff[cnt + channelMap[0]] = Clamp8((vAvg + g) >> shift);
|
|
buff[cnt + channelMap[3]] = Clamp8(aAvg >> shift);
|
|
cnt += channels;
|
|
if (!m_downsample || (j & 1)) uPos++;
|
|
yPos++;
|
|
}
|
|
if (!m_downsample || (i & 1)) uOffset += uw;
|
|
yOffset += yw;
|
|
buff += pitch;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
#ifdef __PGF32SUPPORT__
|
|
case ImageModeGray32:
|
|
{
|
|
ASSERT(m_header.channels == 1);
|
|
ASSERT(m_header.bpp == 32);
|
|
|
|
const int yuvOffset31 = 1 << (UsedBitsPerChannel() - 1);
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
|
|
if (bpp == 32) {
|
|
const int shift = 31 - UsedBitsPerChannel(); ASSERT(shift >= 0);
|
|
UINT32 *buff32 = (UINT32 *)buff;
|
|
int pitch32 = pitch/4;
|
|
|
|
for (i=0; i < h; i++) {
|
|
UINT32 yPos = yOffset;
|
|
for (j = 0; j < w; j++) {
|
|
buff32[j] = Clamp31((y[yPos++] + yuvOffset31) << shift);
|
|
}
|
|
yOffset += yw;
|
|
buff32 += pitch32;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
} else if (bpp == 16) {
|
|
const int usedBits = UsedBitsPerChannel();
|
|
UINT16 *buff16 = (UINT16 *)buff;
|
|
int pitch16 = pitch/2;
|
|
|
|
if (usedBits < 16) {
|
|
const int shift = 16 - usedBits;
|
|
for (i=0; i < h; i++) {
|
|
UINT32 yPos = yOffset;
|
|
for (j = 0; j < w; j++) {
|
|
buff16[j] = Clamp16((y[yPos++] + yuvOffset31) << shift);
|
|
}
|
|
yOffset += yw;
|
|
buff16 += pitch16;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
} else {
|
|
const int shift = __max(0, usedBits - 16);
|
|
for (i=0; i < h; i++) {
|
|
UINT32 yPos = yOffset;
|
|
for (j = 0; j < w; j++) {
|
|
buff16[j] = Clamp16((y[yPos++] + yuvOffset31) >> shift);
|
|
}
|
|
yOffset += yw;
|
|
buff16 += pitch16;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
ASSERT(bpp == 8);
|
|
const int shift = __max(0, UsedBitsPerChannel() - 8);
|
|
|
|
for (i=0; i < h; i++) {
|
|
UINT32 yPos = yOffset;
|
|
for (j = 0; j < w; j++) {
|
|
buff[j] = Clamp8((y[yPos++] + yuvOffset31) >> shift);
|
|
}
|
|
yOffset += yw;
|
|
buff += pitch;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
case ImageModeRGB12:
|
|
{
|
|
ASSERT(m_header.channels == 3);
|
|
ASSERT(m_header.bpp == m_header.channels*4);
|
|
ASSERT(bpp == m_header.channels*4);
|
|
ASSERT(!m_downsample);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
UINT16 yval;
|
|
UINT32 cnt;
|
|
|
|
for (i=0; i < h; i++) {
|
|
UINT32 yPos = yOffset;
|
|
cnt = 0;
|
|
for (j=0; j < w; j++) {
|
|
// Yuv
|
|
uAvg = u[yPos];
|
|
vAvg = v[yPos];
|
|
yval = Clamp4(y[yPos] + YUVoffset4 - ((uAvg + vAvg ) >> 2)); // must be logical shift operator
|
|
if (j%2 == 0) {
|
|
buff[cnt] = UINT8(Clamp4(vAvg + yval) | (yval << 4));
|
|
cnt++;
|
|
buff[cnt] = Clamp4(uAvg + yval);
|
|
} else {
|
|
buff[cnt] |= Clamp4(vAvg + yval) << 4;
|
|
cnt++;
|
|
buff[cnt] = UINT8(yval | (Clamp4(uAvg + yval) << 4));
|
|
cnt++;
|
|
}
|
|
yPos++;
|
|
}
|
|
yOffset += yw;
|
|
buff += pitch;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case ImageModeRGB16:
|
|
{
|
|
ASSERT(m_header.channels == 3);
|
|
ASSERT(m_header.bpp == 16);
|
|
ASSERT(bpp == 16);
|
|
ASSERT(!m_downsample);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
UINT16 yval;
|
|
UINT16 *buff16 = (UINT16 *)buff;
|
|
int pitch16 = pitch/2;
|
|
|
|
for (i=0; i < h; i++) {
|
|
UINT32 yPos = yOffset;
|
|
for (j = 0; j < w; j++) {
|
|
// Yuv
|
|
uAvg = u[yPos];
|
|
vAvg = v[yPos];
|
|
yval = Clamp6(y[yPos++] + YUVoffset6 - ((uAvg + vAvg ) >> 2)); // must be logical shift operator
|
|
buff16[j] = (yval << 5) | ((Clamp6(uAvg + yval) >> 1) << 11) | (Clamp6(vAvg + yval) >> 1);
|
|
}
|
|
yOffset += yw;
|
|
buff16 += pitch16;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
ASSERT(false);
|
|
}
|
|
|
|
#ifdef _DEBUG
|
|
// display ROI (RGB) in debugger
|
|
roiimage.width = w;
|
|
roiimage.height = h;
|
|
if (pitch > 0) {
|
|
roiimage.pitch = pitch;
|
|
roiimage.data = buff;
|
|
} else {
|
|
roiimage.pitch = -pitch;
|
|
roiimage.data = buff + (h - 1)*pitch;
|
|
}
|
|
#endif
|
|
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
/// Get YUV image data in interleaved format: (ordering is YUV[A])
|
|
/// The absolute value of pitch is the number of bytes of an image row of the given image buffer.
|
|
/// If pitch is negative, then the image buffer must point to the last row of a bottom-up image (first byte on last row).
|
|
/// if pitch is positive, then the image buffer must point to the first row of a top-down image (first byte).
|
|
/// The sequence of output channels in the output image buffer does not need to be the same as provided by PGF. In case of different sequences you have to
|
|
/// provide a channelMap of size of expected channels (depending on image mode). For example, PGF provides a channel sequence BGR in RGB color mode.
|
|
/// If your provided image buffer expects a channel sequence VUY, then the channelMap looks like { 2, 1, 0 }.
|
|
/// It might throw an IOException.
|
|
/// @param pitch The number of bytes of a row of the image buffer.
|
|
/// @param buff An image buffer.
|
|
/// @param bpp The number of bits per pixel used in image buffer.
|
|
/// @param channelMap A integer array containing the mapping of PGF channel ordering to expected channel ordering.
|
|
/// @param cb A pointer to a callback procedure. The procedure is called after each copied buffer row. If cb returns true, then it stops proceeding.
|
|
void CPGFImage::GetYUV(int pitch, DataT* buff, BYTE bpp, int channelMap[] /*= nullptr*/, CallbackPtr cb /*= nullptr*/, void *data /*=nullptr*/) const {
|
|
ASSERT(buff);
|
|
const UINT32 w = m_width[0];
|
|
const UINT32 h = m_height[0];
|
|
const bool wOdd = (1 == w%2);
|
|
const int dataBits = DataTSize*8; ASSERT(dataBits == 16 || dataBits == 32);
|
|
const int pitch2 = pitch/DataTSize;
|
|
const int yuvOffset = (dataBits == 16) ? YUVoffset8 : YUVoffset16;
|
|
const double dP = 1.0/h;
|
|
|
|
int defMap[] = { 0, 1, 2, 3, 4, 5, 6, 7 }; ASSERT(sizeof(defMap)/sizeof(defMap[0]) == MaxChannels);
|
|
if (channelMap == nullptr) channelMap = defMap;
|
|
int sampledPos = 0, yPos = 0;
|
|
DataT uAvg, vAvg;
|
|
double percent = 0;
|
|
UINT32 i, j;
|
|
|
|
if (m_header.channels == 3) {
|
|
ASSERT(bpp%dataBits == 0);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
int cnt, channels = bpp/dataBits; ASSERT(channels >= m_header.channels);
|
|
|
|
for (i=0; i < h; i++) {
|
|
if (i%2) sampledPos -= (w + 1)/2;
|
|
cnt = 0;
|
|
for (j=0; j < w; j++) {
|
|
if (m_downsample) {
|
|
// image was downsampled
|
|
uAvg = u[sampledPos];
|
|
vAvg = v[sampledPos];
|
|
} else {
|
|
uAvg = u[yPos];
|
|
vAvg = v[yPos];
|
|
}
|
|
buff[cnt + channelMap[0]] = y[yPos];
|
|
buff[cnt + channelMap[1]] = uAvg;
|
|
buff[cnt + channelMap[2]] = vAvg;
|
|
yPos++;
|
|
cnt += channels;
|
|
if (j%2) sampledPos++;
|
|
}
|
|
buff += pitch2;
|
|
if (wOdd) sampledPos++;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
} else if (m_header.channels == 4) {
|
|
ASSERT(m_header.bpp == m_header.channels*8);
|
|
ASSERT(bpp%dataBits == 0);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
DataT* a = m_channel[3]; ASSERT(a);
|
|
UINT8 aAvg;
|
|
int cnt, channels = bpp/dataBits; ASSERT(channels >= m_header.channels);
|
|
|
|
for (i=0; i < h; i++) {
|
|
if (i%2) sampledPos -= (w + 1)/2;
|
|
cnt = 0;
|
|
for (j=0; j < w; j++) {
|
|
if (m_downsample) {
|
|
// image was downsampled
|
|
uAvg = u[sampledPos];
|
|
vAvg = v[sampledPos];
|
|
aAvg = Clamp8(a[sampledPos] + yuvOffset);
|
|
} else {
|
|
uAvg = u[yPos];
|
|
vAvg = v[yPos];
|
|
aAvg = Clamp8(a[yPos] + yuvOffset);
|
|
}
|
|
// Yuv
|
|
buff[cnt + channelMap[0]] = y[yPos];
|
|
buff[cnt + channelMap[1]] = uAvg;
|
|
buff[cnt + channelMap[2]] = vAvg;
|
|
buff[cnt + channelMap[3]] = aAvg;
|
|
yPos++;
|
|
cnt += channels;
|
|
if (j%2) sampledPos++;
|
|
}
|
|
buff += pitch2;
|
|
if (wOdd) sampledPos++;
|
|
|
|
if (cb) {
|
|
percent += dP;
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
/// Import a YUV image from a specified image buffer.
|
|
/// The absolute value of pitch is the number of bytes of an image row.
|
|
/// If pitch is negative, then buff points to the last row of a bottom-up image (first byte on last row).
|
|
/// If pitch is positive, then buff points to the first row of a top-down image (first byte).
|
|
/// The sequence of input channels in the input image buffer does not need to be the same as expected from PGF. In case of different sequences you have to
|
|
/// provide a channelMap of size of expected channels (depending on image mode). For example, PGF expects in RGB color mode a channel sequence BGR.
|
|
/// If your provided image buffer contains a channel sequence VUY, then the channelMap looks like { 2, 1, 0 }.
|
|
/// It might throw an IOException.
|
|
/// @param pitch The number of bytes of a row of the image buffer.
|
|
/// @param buff An image buffer.
|
|
/// @param bpp The number of bits per pixel used in image buffer.
|
|
/// @param channelMap A integer array containing the mapping of input channel ordering to expected channel ordering.
|
|
/// @param cb A pointer to a callback procedure. The procedure is called after each imported buffer row. If cb returns true, then it stops proceeding.
|
|
void CPGFImage::ImportYUV(int pitch, DataT *buff, BYTE bpp, int channelMap[] /*= nullptr*/, CallbackPtr cb /*= nullptr*/, void *data /*=nullptr*/) {
|
|
ASSERT(buff);
|
|
const double dP = 1.0/m_header.height;
|
|
const int dataBits = DataTSize*8; ASSERT(dataBits == 16 || dataBits == 32);
|
|
const int pitch2 = pitch/DataTSize;
|
|
const int yuvOffset = (dataBits == 16) ? YUVoffset8 : YUVoffset16;
|
|
|
|
int yPos = 0, cnt = 0;
|
|
double percent = 0;
|
|
int defMap[] = { 0, 1, 2, 3, 4, 5, 6, 7 }; ASSERT(sizeof(defMap)/sizeof(defMap[0]) == MaxChannels);
|
|
|
|
if (channelMap == nullptr) channelMap = defMap;
|
|
|
|
if (m_header.channels == 3) {
|
|
ASSERT(bpp%dataBits == 0);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
const int channels = bpp/dataBits; ASSERT(channels >= m_header.channels);
|
|
|
|
for (UINT32 h=0; h < m_header.height; h++) {
|
|
if (cb) {
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
percent += dP;
|
|
}
|
|
|
|
cnt = 0;
|
|
for (UINT32 w=0; w < m_header.width; w++) {
|
|
y[yPos] = buff[cnt + channelMap[0]];
|
|
u[yPos] = buff[cnt + channelMap[1]];
|
|
v[yPos] = buff[cnt + channelMap[2]];
|
|
yPos++;
|
|
cnt += channels;
|
|
}
|
|
buff += pitch2;
|
|
}
|
|
} else if (m_header.channels == 4) {
|
|
ASSERT(bpp%dataBits == 0);
|
|
|
|
DataT* y = m_channel[0]; ASSERT(y);
|
|
DataT* u = m_channel[1]; ASSERT(u);
|
|
DataT* v = m_channel[2]; ASSERT(v);
|
|
DataT* a = m_channel[3]; ASSERT(a);
|
|
const int channels = bpp/dataBits; ASSERT(channels >= m_header.channels);
|
|
|
|
for (UINT32 h=0; h < m_header.height; h++) {
|
|
if (cb) {
|
|
if ((*cb)(percent, true, data)) ReturnWithError(EscapePressed);
|
|
percent += dP;
|
|
}
|
|
|
|
cnt = 0;
|
|
for (UINT32 w=0; w < m_header.width; w++) {
|
|
y[yPos] = buff[cnt + channelMap[0]];
|
|
u[yPos] = buff[cnt + channelMap[1]];
|
|
v[yPos] = buff[cnt + channelMap[2]];
|
|
a[yPos] = buff[cnt + channelMap[3]] - yuvOffset;
|
|
yPos++;
|
|
cnt += channels;
|
|
}
|
|
buff += pitch2;
|
|
}
|
|
}
|
|
|
|
if (m_downsample) {
|
|
// Subsampling of the chrominance and alpha channels
|
|
for (int i=1; i < m_header.channels; i++) {
|
|
Downsample(i);
|
|
}
|
|
}
|
|
}
|
|
|